Adam, Adolphe Charles

• Giselle ....Act I - Pas de Deux, transcription for piano duet

Agrell, Johan

• 6 Sonatas or Duets for Two German Flutes or Violins, Op.2 ....Complete score

Alkan, Charles-Valentin

• Bombardo-Carillon, Op.47 ....Complete Score

Amberg, Johan

• 5 Duettini ....Complete score and parts

Anonymous, A

• Fortune My Foe ....Duet with percussion
• sonata a due viole ....all original manuscript parts

Arensky, Anton Stepanovich

• Suite No.2 for 2 Pianos, Op.23 ....Complete Score (2 pianos)
• Suite No.2 for 2 Pianos, Op.23 ....Complete Score
• Рафаэль ....No. 3. Duet of Raphael and Fornarina

Bach, Leonhard Emil

• 6 Esquisses Polonaises ....Score
• Duets BWV 802-805 ....No.3 BWV804
• Duets BWV 802-805 ....No.2 BWV803
• Duets BWV 802-805 ....No.4 BWV805
• Duets BWV 802-805 ....No.1 BWV802
• Messe H moll ....Appendix: Variation to vocal duet in Credo (on page 172)
• Thematic Catalogue of Bach-Gesellschaft Ausgabe ....Thematic Catalogue of Chamber music, BWV 1046-1051; 1041-1043, 1045; 1060-1062; 1001-1006, 1007-1012; 1063-1064; 1033-1035, 1023, 1026, Duetto for 2 cembali (W.F.Bach, F.10), BWV 1065; Anhang: Vivaldi: Concerto Op.3/10; BWV 1066-1069, 1046a

Barbella, Emanuele

• Sonata a Due Mandolini (Gimo 12) ....Complete score of all movements
• Sonata a Due Mandolini (Gimo 13) ....Complete score of all movements

Barmann, J.F.

• 3 Duets for Violin and Viola, Op.6 ....Vl,Va parts

Barrière, Jean-Baptiste

• 6 Sonatas for Violoncello ....Complete Cello and Basso Continuo score

Beethoven, Ludwig Van

• 3 Duets for Clarinet and Bassoon, WoO 27 ....Complete Score of all 3 duets
• Eight Variations in C major on a Theme by Count Waldstein for Piano, Four Hands WoO 67 ....Complete score (Secondo and Primo parts on alternating pages)
• Six Variations in D Major on Beethoven's 'Ich denke dein' for Piano, Four Hands, WoO 74 ....Complete score (Secondo and Primo parts on alternating pages)
• Three Marches for Piano, Four Hands Op.45 ....Complete score (Secondo and Primo parts on alternating pages)

Bériot, Charles-Auguste de

• 3 Concertant Duets ....Complete Violins parts
• Deuxieme Fantasie-Ballet, Op.105 ....Score and Violin part
• Deuxieme Fantasie-Ballet, Op.105 ....Violin and Piano parts

Bizet, Georges

• Children's Games ....8. Les Quatre Coins
• Children's Games ....5. Le Volant
• Children's Games ....Complete 4-hand score of all movements
• Children's Games ....3. La Poupée
• Children's Games ....1. L'Escarpolette
• Children's Games ....12. Le Bal
• Children's Games ....4. Les Chevaux de Bois
• Children's Games ....7. Les Bulles de Savon
• Children's Games ....9. Colin-Maillard
• Children's Games ....2. La Toupie
• Children's Games ....11. Petit Mari, Petite Femme!
• Children's Games ....10. Saute-Mouton
• Children's Games ....Suite (Orchestral Score)
• Children's Games ....6. Trompette et Tambour

Blake, Charles Dupee

• Clayton's grand waltz ....Piano 4-hands - complete score
• Waltz ....Complete score
• Waltzes ....Complete score

Blumenthal, Joseph von

• Duo Concertante a Violino e Viola No.1 Op.81 ....Duet No.1 - Vl and Va parts

Bobrowicz, Jan Nepomucen

• Souvenir de la Pologna - Grand Pot-Pourri ....Cello, Guitar, and Piano parts

Bonis, Mel

• Suite en forme de valses ....Complete score

Bonporti, Francesco Antonio

• Invenzioni a violino solo ....Score from the BGA

Borghi, Luigi

• 6 Duetti per Violino e Viola ....Violin and Viola parts

Brahms, Johannes

• 3 Duets, Op.20 ....Complete Score
• 4 Duets, Op.28 ....Complete Score
• 4 Duets, Op.61 ....Complete Score
• 5 Duets, Op.66 ....Complete Score
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Hungarian Dance No.3 in F Major
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Hungarian Dance No.9 in E Minor
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Nos. 17-21 - Score and Part
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Composer's transcription for piano solo (Nos. 1-10)
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Hungarian Dance No.21 in E Minor
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Transcription for piano solo (Nos. 1-10)
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Hungarian Dance No.11 in D Minor
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Nos. 6-10 - Score and Part
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....No.1, Composer's Orchestration - Full score
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Hungarian Dance No.5 in F Minor
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Hungarian Dance No.12 in D Minor
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Hungarian Dance No.15 in Bb Major
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Hungarian Dance No.4 in F Minor
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Hungarian Dance No.16 in F Minor
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Hungarian Dance No.7 in A Major
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Nos. 11-16 - Score and Part
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Hungarian Dance No.1 in G Minor
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Hungarian Dance No.17 in F Minor
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Hungarian Dance No.14 in D Minor
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Complete Score (Nos.1, 3, 10)
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Hungarian Dance No.10 in E Major
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Complete Score
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Hungarian Dance No.13 in D Major
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....No.10, Composer's Orchestration - Full score
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Hungarian Dance No.18 in D Major
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Hungarian Dance No.20 in E Minor
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Hungarian Dance No.8 in A Minor
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Hungarian Dance No.2 in D Minor
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....No.3, Composer's Orchestration - Full score
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Hungarian Dance No.6 in Db Major
• Hungarian Dances for four hands No.1 - 21, WoO 1 ....Hungarian Dance No.19 in B Minor
• Neue Liebeslieder Waltzes, Op.65 ....Complete score
• Neue Liebeslieder Waltzes, Op.65 ....Complete Score
• Neue Liebeslieder Waltzes, Op.65 ....Complete Score
• Serenade No.1 in D major for orchestra (1857) ....Composer's Reduction for Piano Duet
• Transcriptions - Works of Geroge Frideric Handel ....Complete Score
• Variations on a Theme by Robert Schumann for piano, four hands ....Variations on a Theme by Robert Schumann
• Variations on a Theme by Robert Schumann for piano, four hands ....Complete Score

Breval, Jean-Baptiste

• 6 Sonatas for Cello, Op.12 ....6 Sonatas score

Brüll, Ignaz

• 3 Duets, Op.74 ....Complete score
• 3 Duets, Op.75 ....Complete score

Bruni, Antonio Bartolomeo

• Duetti a Violino e Viola Op.25 ....Book 1 Vl,Va parts
• Duetti a Violino e Viola Op.25 ....Book 2 Vl,Va parts
• Duetti a Violino e Viola Op.4 ....Violin and Viola Parts
• Duetti a Violino e Viola Op.4 ....Violin and Viola Parts Book 1 (No.1-3)
• Duetti a Violino e Viola Op.4 ....Violin and Viola Parts Book 2 (No.4-6)

Burgmuller, Johann Friedrich

• 3 Nocturnes for Cello and Guitar ....Cello and Guitar parts

Busoni, Ferruccio

• Duettino Concertante, KiV B 88 ....Complete Score

Campagnoli, Bartolomeo

• Six Duos Op.2 ....Violin and Flute parts

Carulli, Ferdinando

• 3 Petits Duos for Flute and Guitar, Op.191 ....Duets: Parts
• Duos Nocturnes ....Full Score

Casella, Alfredo

• Pupazzetti, Op.27 ....Piano 4 hands

Cavallini, Eugenio

• 2 Concertant Duos for 2 Violins ....Parts of Violin I and II

Cellitti, Venanzio

• Variazioni per pianoforte e violoncello ....complete score

Chabrier, Emmanuel

• Trois valses romantiques ....Piano 2 - complete
• Trois valses romantiques ....Piano 1 - complete

Chaminade, Cecile

• Duo symphonique pour deux pianos, Op.117 ....Complete score of second piano part
• Duo symphonique pour deux pianos, Op.117 ....Complete score of first piano part

Colomer, Blas María de

• Idylles et Caprices ....Piano 4-hands score

Cui, César Antonovich

• William Ratcliff ....No. 14. Act III, Scene 2. [Love] Duet
• Кавказский пленник ....No. 14. Duettino of Abubeker and Fatima
• Кавказский пленник ....No. 7. Duet of Fatima and the Prisoner
• Кавказский пленник ....No. 2. Duet of Fatima and Her Father
• Кавказский пленник ....No. 11. Duet of Fekherdin and Kazenbek
• Кавказский пленник ....No. 22. Duet of the Prisoner and Fatima
• Кавказский пленник ....No. 20. Recitative Scene, Duet of Abubeker and Fatima
• Кавказский пленник ....No. 12. Duettino of Fatima and Mariam, Little Chorus of Abubeker's Friends
• Семь романсов и дуэтов ....6. Дуэт -- Тучи (Лермонтов)
• Семь романсов и дуэтов ....5. Дуэт -- Последные цветы (А. Пушкин)
• Семь романсов и дуэтов ....1. Ни отзыва, ни слова, ни привета (А. Толстой), including ad front page for Cui's songs
• Семь романсов и дуэтов ....3. Fleur fanée (= Цветок (А. Пушкин)
• Семь романсов и дуэтов ....2. L'Étoile (= Звезда (Лермонтов))
• Сын мандарина ....1. Duet (soprano and tenor)
• Сын мандарина ....6. Duet (baritone and bass)
• Сын мандарина ....8. Duet and Trio (soprano, tenor and bass)

Czerny, Carl

• Introduction et Variations Faciles sur une Valse de M. le Comte de Gallenberg, Op.87 ....complete score
• Sonata for Piano Four-Hands, Op.10 ....complete score
• Variationen über einen beliebten Wiener-Walzer ....complete score
• Variationen über einen beliebten Wiener-Walzer ....Complete score
• Variations Brillantes, Op.14 ....complete score

Dancla, Charles

• 6 Airs Varies, Series I, Op.89 ....Violin part of all pieces
• 6 Airs Varies, Series I, Op.89 ....Complete score of all pieces

Davidson, Robert

• Message Ground ....Viola version - complete score
• Message Ground ....Violin version - complete score

De Call, Leonard

• Duo Facile, Op.20 ....Parts for Guitar 1 & Guitar 2
• Serenade ....Flute and guitar part
• Serenade for 2 Guitars, Op.39 ....Parts for Guitar 1 & Guitar 2
• Serenade for 2 Guitars, Op.39 ....Parts for Guitar 1 & Guitar 2
• Serenade for Violin (or Flute) and Guitar, Op.54 ....Parts for Violin (or Flute) and Guitar
• Serenade for Violin and Guitar, Liv.1 ....Parts for Violin and Guitar
• Serenade for Violin and Guitar, Liv.2 ....Parts for Violin and Guitar
• Serenade for Violin and Guitar, Op.129 ....Parts for Violin and Guitar
• Sonata for Flute and Guitar, Op.103 ....Parts for Flute & Guitar

Debussy, Claude

• En Blanc et Noir (In Black and White) ....Complete Score
• En Blanc et Noir (In Black and White) ....III. Scherzando
• En Blanc et Noir (In Black and White) ....II. Lent. Sombre
• En Blanc et Noir (In Black and White) ....I. Avec emportement

Devienne, François

• 6 Duets for 2 Flutes ....Parts

Diabelli, Anton

• Serenade No.3 for 2 Guitars, Op.63 ....Parts for Guitar 1 & Guitar 2 (Manuscript)

Dotzauer, Justus Friedrich

• Pot-pourri for Cello and Guitar, Op.21 ....Cello and Guitar parts

Dubois, Théodore

• Promenade sentimentale, duetto pour violon et violoncelle avec accompagnement de piano ....Score and parts

Dussek, Jan Ladislav

• Duet for Harp and Piano, Op.38 ....Harp part only

Duvernoy, Frédéric

• 3 Nocturnes for Harp and Horn ....Score

Edgerton, Michael Edward

• A Holy Person Falls into the Nile as a Pelican ....complete score
• Adjusting to Beams Falling ....complete score
• Adjusting to Beams Falling ....title page and notes
• Friedrich's Comma ....complete score
• The Hidden Thunder of Screaming Souls ....Complete Score
• The Hidden Thunder of Screaming Souls ....Title page and notes

Elgar, Edward

• From The Bavarian Highlands no.3 ....4 hand arrangement

Ferling, Franz Wilhelm

• 3 Duo Concertantes for 2 Oboes, Op. 13 ....Complete Parts

Fiorillo, Federigo

• 6 Concertant Duos Op.14 ....Parts of Violin I and II

Foote, Arthur

• 6 Piano Duets ('Pieces at Twilight') ....Score for Piano 4-hands

Fuchs, Robert

• Duetti a Violino e Viola ....All parts

Gade, Niels

• Sonata per Viola (Violino) e Piano ....Transcription for viola / piano: score and part - complete
• Sonata per Viola (Violino) e Piano ....Score and part - complete

Giannotti, Alessandro

• Tempo e Spazio ....Full Score

Giardini, Felice

• Duetto a Violino e Violoncello ....Vl,Vc parts
• Duetto per Violino e Viola ....Vl,Va parts

Giorgetti, Ferdinando

• 6 Characteristic Studies and Gran Solo ....Viola Solo, Cello, Viola and Piano Parts

Giuliani, Mauro

• 16 Pieces Faciles, Op.74 ....Complete Score
• 6 Variations for Flute (or Violin) and Guitar, Op.81 ....Flute, Violin and Guitar Parts
• Grand Duo Concertant for Guitar and Flute, Op.130 ....Guitar and Flute Parts
• Serenade for Flute (or Violin) and Guitar, Op.127 ....Guitar and Flute (Violin) Parts

Glière, Reinhold

• 12 Morceaux pour piano à 4 mains, Op.48 ....Complete score
• 6 Morceaux pour 2 Pianos, Op.41 ....No.6: Mazurka

Glinka, Mikhail Ivanovich

• Capriccio on Russian Themes ....Complete Score
• Impromptu-Galop ....Complete Score
• Initial Polka ....Complete Score

Godard, Benjamin Louis Paul

• 6 Duets for Two Violins and Piano ....Violin 2 Part
• 6 Duets for Two Violins and Piano ....Violin 1 Part
• 6 Duets for Two Violins and Piano ....Piano Score

Gottschalk, Louis Moreau

• La Jota aragonesa ....For Piano Duet

Gouvy, Louis Théodore

• 6 Morceaux, Op.59 ....Complete Score
• Divertissement for 2 Pianos, Op.78 ....Parts for Piano 1 & Piano 2
• Ghiribizzi, Op.83 ....Complete Score
• Scherzo et Aubade, Op.77 ....No.1 - Scherzo

Grayson, Martin

• Duo for Violin and Viola ....Vln and Vla Parts
• Duo for Violin and Viola ....Score
• Ludi Musici I ....Violin 2 part for LM 1-4
• Ludi Musici I ....Parts for LM Numbers 5-7
• Ludi Musici I ....Score for LM Numbers 5-7
• Ludi Musici I ....Scores of LM 1-4
• Ludi Musici I ....Violin 1 part for LM 1-4
• The Cuckoo, Variations on a Folk Song, 2 Cellos Version ....Score
• The Cuckoo, Variations on a Folk Song, 2 Cellos Version ....Parts for 2 cellos

Grieg, Edvard

• In Autumn, Op.11 ....Complete Score

Gulielmus, G

• La Bassa Castiglia ....Complete score

Hahn, Reynaldo

• Caprice mélancolique for 2 Pianos ....Complete score
• Sept Berceuses ....Complete score

Hallman, Joseph

• Duet for Bassoon and Trumpet ....Complete score
• Duet for Clarinet and Bassoon ....Complete score
• Duet for Violin and Cello ....Complete score
• Violencia for cello and marimba ....Complete Score

Halvorsen, Johan

• Passacaglia for Violin and Viola ....Violin part (small size, fits on 3 pages)
• Passacaglia for Violin and Viola ....Typeset score
• Passacaglia for Violin and Viola ....Viola part (small size, fits on 3 pages)
• Passacaglia for Violin and Viola ....Viola part (large size, fits on 4 pages)
• Passacaglia for Violin and Viola ....Violin part (large size, fits on 4 pages)

Handel, George Frideric

• Duos and Trios, 1 ....Complete Score
• Duos and Trios, 2 ....Complete Score

Henselt, Adolf von

• Duo for Cello and Piano, Op.14 ....Score and part - complete

Hoffmann, Norbert Rudolf

• Batería ....Title (pages 1-2)
• Batería ....Score (pages 3-28)
• Kalamatscho ....Score (pages 3-7)
• Kalamatscho ....Title (pages 1-2)
• Ritze-Ratze ....Score (pages 3-20)
• Ritze-Ratze ....Title (pages 1-2)
• Trombo ....Title - german/spanish (pages 1-2)
• Trombo ....Explanations - german (pages 3-6)
• Trombo ....Full score - spanish (pages 6-13)
• Trombo ....Explanations - spanish (pages 3-6)

Hoffmeister, Franz Anton

• Duetti a Violino e Viola Op.19 ....Vl,Va parts
• Duetti a Violino e Viola Op.65 ....Book 2
• Duetti a Violino e Viola Op.65 ....Book 1
• Duetti a Violino e Viola Op.7 ....Violin and Viola parts

Honegger, Arthur

• Sonatine for 2 Violins ....Complete Score

Huber, Hans

• Waltzes for Piano Four-Hands, Op.59 ....Score

Hüe, Georges

• Fantasy for violin and piano ....Complete violin / piano score, part

Hummel, Johann Nepomuk

• Pot-Pourri for Guitar and Piano, Op.53 ....Complete Score (in parts)
• Variations sur la Romance de 'Une folie' (Mehul) op.14 ....complete score

Hus-Desforges, Pierre Louis

• Sonatines brillantes et faciles ....3 Sonatas (Duos) score

Irgmaier, Josef

• Auf die Reihe kriegen ....Complete score in C A Bb D Eb F G
• Florestan spricht ....Complete score in C Bb Eb F
• Kadenz ....Complete score in C A Bb D Eb F G
• Kanon zum Einstand in die neue Wohnung ....Complete score, violin solo version
• Kanon zum Einstand in die neue Wohnung ....Complete score, upper register in C Bb
• Kanon zum Einstand in die neue Wohnung ....Complete score, middle register in C Bb Eb F
• Kanon zum Einstand in die neue Wohnung ....Complete score, lower register in C Bb Eb F
• Kleiner Vormarsch ....Complete score, middle register in C A Bb Eb F G
• Kleiner Vormarsch ....Complete score, lower register in C Bb Eb F
• Kleiner Vormarsch ....Complete score, upper register in C Bb D Eb F
• Piano Bar Falling Into Sleep ....Complete score in C Bb Eb F
• Pingpong ....Complete score, upper register in C A Bb D Eb F G
• Pingpong ....Complete score, middle register in C Bb Eb F
• Pingpong ....Complete score, lower register in C Bb Eb F
• Vorspiel mit der Paukenflucht ....Complete score, lower register in Bb Eb F
• Vorspiel mit der Paukenflucht ....Complete score, upper & lower register in C
• Vorspiel mit der Paukenflucht ....Complete score, upper register in A Bb D Eb F G
• Zenons Tanz ....Complete score, middle register in C Bb Eb F
• Zenons Tanz ....Complete score, upper register in C A Bb D Eb F G
• Zenons Tanz ....Complete score, lower register in C Bb Eb F

Jensen, Niels Peter

• 3 Duos for 2 Flutes, Op.9 ....Parts for Flute 1 & Flute 2
• 6 Duos for 2 Flutes, Op.16 ....Parts for Flute 1 & Flute 2

Joplin, Scott

• Treemonisha ....20. I Want To See My Child (Duet)

Kalliwoda, Johann Wenzel

• Overture No.2 for Piano 4-Hands, Op.44 ....Transcription for piano 4 hands

Kayser, H.E.

• Grand Duo Concertant for Violin and Viola Op.2 ....Vl and Viola parts

Khym, Charles or Carl

• Grande Duo a Violino e Viola Op.10 ....Vl,Va parts

Krein, Alexander Abramovich

• Caprice Hebraique, Op.24 ....Complete score and violin part

Kreutzer, Rodolphe

• 3 Concertant Duos Op.1 for 2 Violins ....Parts of Violin I and II
• 6 Variations on a theme from Weber's 'Die Freischütz' for 2 Guitars, Op.6 ....Parts (Guitar 1 & 2)

Krommer, Franz Vincenz

• 3 Duos Concertants pour 2 Violons, op.33 ....1st Violin part
• 3 Duos Concertants pour 2 Violons, op.33 ....2nd Violin part

Kuhlau, Friedrich Daniel Rudolf

• 3 Brilliant Duos for 2 Flutes, Op.102 ....Separate parts for Flute 1 & Flute 2
• 3 Brilliant Duos for 2 Flutes, Op.81 ....Separate parts for Flute 1 & Flute 2
• 3 Duets for 2 Flutes, Op.10 ....Separate parts for Flute 1 & Flute 2
• 3 Grand Duets for 2 Flutes, Op.39 ....Separate parts for Flute 1 & Flute 2

Kummer, Friedrich August

• 2 Concert Duos for Violin and Violoncello, Op.67 ....Duets: Parts
• 6 Duos for 2 Cellos, Op.156 ....Cello 1 and 2 parts

Lalo, Edouard

• Deux petits morceaux à 4 mains ....n°2 - Sérénade
• Deux petits morceaux à 4 mains ....n°1 - Romance

Leonovich, Yuriy

• Sonata for Violin and Cello, Op.56 ....Violin Part
• Sonata for Violin and Cello, Op.56 ....Cello Part

Lindley, Robert

• 3 Duets for 2 cellos ....3 Duets for 2 cellos parts

Lingenberg, Wilfried

• Intermezzo ....Horn Part (alternate for Tuba)
• Intermezzo ....Tuba / Organ score

Liszt, Franz

• Hungarian Rhapsody No.2 in C-sharp minor ....Arrangement for piano duet

Loulié, L.A.

• 3 Duetti Concertanti a Violino e Viola Op.5 ....Vl,Va parts

MacDowell, Edward Alexander

• Moon-Pictures, Op.21 ....Complete Score

Marais, Marin

• Vielles danses françaises ....Piano Score
• Vielles danses françaises ....Part transcribed for violoncello

Mason, William

• Ballade, Op.12 ....Complete Score

Masse, Jean Baptiste

• Sonatas for 2 Violoncellos, Book II ....Sonata Quarta
• Sonatas for 2 Violoncellos, Book II ....Sonata Seconda
• Sonatas for 2 Violoncellos, Book II ....Sonata Terza
• Sonatas for 2 Violoncellos, Book II ....Sonata Quinta
• Sonatas for 2 Violoncellos, Book II ....Sonata Prima
• Sonatas for 2 Violoncellos, Book II ....Sonata Sexta

Massenet, Jules

• 1ère suite ....n°1
• 1ère suite ....n°2
• 1ère suite ....n°3
• Suite pour piano à 4 mains ....Complete score

Mayseder, Joseph

• Variations on an Original Theme for Violin and Piano (or Guitar), Op.45 ....Parts (Violin, Piano, Guitar)

Mertz, Johann Kaspar

• Barcarole, Op.41 ....Complete Score
• Divertissement on 'Rigoletto', Op.60 ....Complete Score
• Wasserfahrt am Traunsee ....Complete Score

Mesquita, Carlos de

• romance sans paroles ....Complete score

Mestrino, Niccolò

• 3 Duetti per 2 Violini ....complete violins parts

Mojica, Natanael

• honduras-suite-guitar violin ....En Catracho Enamorado Op.14 No.2
• honduras-suite-guitar violin ....Cañaveral Op.14 No.1
• violin and guitar, piece ....fanta..G minor

Moszkowski, Moritz

• 3 Nouvelles Danses Espanoles, Op.65 ....Complete Score
• Cortège et Gavotte, Op.43 ....Complete Score
• Kaleidoskop, Op.74 ....Complete Score
• Le Maitre et l'Eleve, Op.96 ....Complete Score

Mozart, Wolfgang Amadeus

• 12 Horn Duets ....No.12
• 12 Horn Duets ....Transcription for Oboe and Cor Anglais
• 12 Horn Duets ....No.8
• 12 Horn Duets ....No.6
• 12 Horn Duets ....No.9
• 12 Horn Duets ....No.5
• 12 Horn Duets ....No.7
• 12 Horn Duets ....No.4
• 12 Horn Duets ....No.2
• 12 Horn Duets ....No.11
• 12 Horn Duets ....No.10
• 12 Horn Duets ....No.3
• 12 Horn Duets ....No.1
• Don Giovanni, K.527 ....n°8 - Duettino, transcription for piano 4 hands

Muller, Johann Adam

• 3 Duetti Concertanti a Violino e Viola Op.2 ....Vl,Va parts
• 6 Duetti a Violino e Viola Ouvre 2 ....Vl,Va parts
• 6 Duetti Concertanti a Violino e Viola Op.2 ....Book 1: Duets Nos.1-3 -- Parts

Mussi, Antonio

• Aria per basso cantante nell'Opera Maometto II del celebre Maestro Gioacchino Rossini Espressamente ridotta per Viola e Violino ....Complete parts

Neubauer, Franz Christoph

• 3 Sonate per Violino e Viola ....Vl,Va parts
• 4 Duets for Violin and Viola, Op.5 ....Vl and Va parts

Neumann, Heinrich

• Schweizer Serenade, Op.29 ....Parts for Clarinet & Guitar

Nickell, Robbie

• Violin Duet ....Duet for Violins

Offenbach, Jacques

• Duos for 2 Cellos, Op.49 ....Book 2 (Nos. 4-6) parts
• Duos for 2 Cellos, Op.50 ....Duos, Op.50 (book 1) parts
• Duos for 2 Cellos, Op.50 ....Duos, Op.50 (book 2) parts
• Duos for 2 Cellos, Op.51 ....Duos, Op.51 (book 2) parts
• Duos for 2 Cellos, Op.51 ....Duos, Op.51 (book 1) parts
• Duos for 2 Cellos, Op.51 ....Duos, Op.51 (book 3) parts
• Duos for 2 Cellos, Op.52 ....Duos, Op.52 (book 1) parts
• Duos for 2 Cellos, Op.52 ....Duos, Op.52 (book 2) parts
• Duos for 2 Cellos, Op.52 ....Duos, Op.52 (book 3) parts
• Duos for 2 Cellos, Op.53 ....Duos, Op.53 (book 3) parts
• Duos for 2 Cellos, Op.53 ....Duos, Op.53 (book 2) parts
• Duos for 2 Cellos, Op.53 ....Duos, Op.53 (book 1) parts
• Duos for 2 Cellos, Op.54 ....Duos, Op.54 (book 2) parts
• Duos for 2 Cellos, Op.54 ....Duos, Op.54 (book 3) parts
• Duos for 2 Cellos, Op.54 ....Duos, Op.54 (book 1) parts
• Galop ("Can-Can") from Orphée aux Enfers (Orpheus in the Underworld) ....Overture Full Score

Oma Rønnes, Kristian

• The March to Xerxes ....The March to Xerxes

Ornstein, Leo

• Prelude and Minuette in Antique Style for Flute and Clarinet ....Flute and Clarinet parts of both pieces
• Seeing Russia With Teacher: 10 Duets for Piano ....Complete score
• Valse Buffon for Piano - Four Hands ....Complete Score

Paderewski, Ignacy Jan

• Tatra-Album: Tänze und Lieder des polnischen Volkes aus Zakopane ....Complete score of Nos.1-3
• Tatra-Album: Tänze und Lieder des polnischen Volkes aus Zakopane ....Complete score of Nos.4-6

Paganini, Niccolò

• 6 Sonatas for Violin and Guitar, Op.2a ....Violin and Guitar parts
• 6 Sonatas, Op.3 ....6 Sonatas, Op.3 violin and guitar parts
• Paganini Album ....Complete - piano score and part

Paladilhe, Emile

• Petite marche ....Complete score

Paulinyi, Zoltan

• Biduo d'Ouro ....Complete score
• Ofertorio ....Complete score

Peters-Rey, Gregor

• Krumbacher Scherzo ....Score / Partitur
• Krumbacher Scherzo ....Flute
• Rondo für Eva Maria ....Score / Partitur
• Three Duets for Concert Flute and Harp ....Flute
• Three Duets for Concert Flute and Harp ....Score / Partitur

Pichl, Vaclav

• 3 Duetti a Viola e Violoncello ....Viola and Cello parts
• 6 Duets for 2 Violins, Op.4 ....Violin 1 and 2 parts
• 6 Duetti a Violino e Viola ....Violin and Viola parts

Pixis, Johann Peter

• Variations brillantes ....Complete score

Pleyel, Ignace Joseph

• 3 Duetti a Violino e Viola Op.30 ....Violin and Viola parts
• 3 Duetti a Violino e Viola Op.46 ....Vl,Va parts
• 3 Grand Duets for Violin and Viola, Op.69 ....Violin and Viola parts
• 6 Duetti a Violino e Viola Op.4 ....Suite No.1
• 6 Duetti a Violino e Viola Op.4 ....Suite No.2
• 6 Duetti Concertanti a Violino e Viola ....Vl,Va parts

Pugno, Raoul

• Aubade ....Complete score

Quantz, Johann Joachim

• 6 Duets for 2 Flutes, Op.2 ....Score

Rachmaninoff, Sergei

• 2 Morceaux de Salon, Op.6 ....Violin / Piano score
• 2 Morceaux de Salon, Op.6 ....Violin Part
• 6 Morceaux pour Piano a Quatre Mains, Op.11 ....Complete
• Aleko, Opera in One Act ....13. Duet and Finale
• Aleko, Opera in One Act ....8. Duettino
• Fantaisie (Tableaux), Op. 5 pour Deux Pianos ....2. I Noch … I Lyubov (La Nuit … L'Amour) - complete score
• Fantaisie (Tableaux), Op. 5 pour Deux Pianos ....1. Barcarolla (Barcarolle) - complete score
• Fantaisie (Tableaux), Op. 5 pour Deux Pianos ....4. Slyetli Prazdnik (Pâques) - complete score
• Fantaisie (Tableaux), Op. 5 pour Deux Pianos ....3. Slezi (Les Larmes) - complete score
• Russian Rhapsody ....2 Pianos
• Suite No. 2, Op. 17 ....2. Valse
• Suite No. 2, Op. 17 ....Piano 1 Part
• Suite No. 2, Op. 17 ....Piano 2 Part
• Suite No. 2, Op. 17 ....1. Alla marcia
• Suite No. 2, Op. 17 ....3. Romance
• Suite No. 2, Op. 17 ....4. Tarantella
• Suite No. 2, Op. 17 ....Cover
• Suite No. 2, Op. 17 ....Complete

Raff, Joseph Joachim

• Chaconne for Two Pianos, Op.150 ....Reduction for Piano Four-Hands
• Humoreske in Walzerform, Op.159 ....Complete Score

Rasmussen, Peter

• Instructive Duets for 2 Horns ....Parts for Horn 1 and Horn 2

Reger, Max

• 12 Walzercapricen ....Complete

Reinecke, Carl

• Andante and Variations, Op.6 ....Complete
• Improvisada über ein französisches Volkslied aus dem 17. Jahrhundert ....Parts for both pianos.

Rode, Pierre

• 6 Duetti a due Violini ....All complete parts

Roger-Ducasse, Jean

• Petite suite ....1- Souvenance
• Petite suite ....2- Berceuse
• Petite suite ....3- Claironnerie

Rolla, Alessandro

• 24 Scale ....Complete parts
• 3 Divertimenti a Violino e Viola, BI 40,41,49 ....Complete parts
• 3 Divertimentos Op.6 BI 63-80-89 for Violin and Viola ....Violin and Viola Parts
• 3 Duos BI 10,3,14 for 2 Violas ....Parts of Viola I and Viola II
• 6 Duos BI 22-5-11-21-20-15 for 2 Violas ....Parts of Viola I and Viola II (Manuscript No.1) BI 22-5-11-21-20-15
• 6 Duos BI 22-5-11-21-20-15 for 2 Violas ....Parts of Viola I and Viola II (Manuscript No.2)BI 22-5-11-21-20 (Only 5 Duos)
• alternative version of serenata op14 n 3 ....all original manuscript parts
• Arpeggio BI 7 for Viola with Viola or Violin Accompaniment ....Score
• Divertimanto a violino e viola (alternativa a op 6 n 1) ....all original manuscript parts
• divertimanto a violino e viola BI 109 ....all original manuscript parts
• divertimento a violino e viola BI 79 ....all manuscript original parts
• Duets for Violin and Violoncello ....Violin and Violoncelo Parts
• duetti a due viole manoscritti torinesi ....Manuscript Viola Parts
• duetti a due viole tomo Ib ....Manuscript Viola Parts
• duetti a due violini op 3 ....all parts
• duetti a Giulio Ottolini ....Vl 1 e 2 printed parts, vla original manuscript
• duetti a violino e viola 0p 12 ....vl e vla parts
• Duetti a violino e viola op 1 ....vl e vla parts
• duetti a violino e viola op 10 ....vl e vla parts
• duetti a violino e viola op 11 ....vl e vla parts
• duetti a violino e viola op 13 ....vl e vla parts
• duetti a violino e viola op 15 ....vl e vla parts
• duetti a violino e viola op 16 ....vl e vla parts
• duetti a violino e viola op 17 ....vl e vla parts
• duetti a violino e viola op 18 ....vl e vla parts
• duetti a violino e viola op 2 ....vl e viola parts
• duetti a violino e viola op 5 ....vl e vla parts
• duetti a violino e viola op 7 ....vl e vla parts
• Duetti a Violino e Viola, Op.4 ....Separate Parts (Violin, Viola)
• Duetti a Violino e Viola, Op.4 ....Separate Parts (Violin, Viola) - Manuscript
• duetti e divertimenti a violino e viola op 6 ....vl e vla parts
• duetti e serenata a violino e viola op 8 ....vl e vla parts
• duetto a Giulio Ottolini ....all original manuscript parts
• Duetto a violino e viola -Angelo Bianchi- ....all printed parts + original manuscript that is different in the last movement
• duetto a violino e viola (vedi op 17 per due violini) ....all original manuscript parts
• duetto a violino e viola BI 33 ....Manuscript parts
• duetto a violino e viola op 9 ....Complete parts
• scherzo campestre a violino e viola BI 42 ....all original manuscript parts
• Serenade Op.8 BI 68 for Violin and Viola ....Violin and Viola printed parts and original manuscript
• serenate a violino e viola op 14 ....vl e vla parts
• sonata per viola con accompagnamento di violino I ....all original manuscript parts
• sonata per viola con accompagnamento di violino II ....all original manuscript parts
• sonata per viola con accompagnamento di violino op postuma ....Parts
• sonate per viola e basso o due viole ....Printed Parts (2 Sonatas), Manuscript Part (Sonata 2 only)
• studi-duetti per due violini op 10 ....Parts
• tre sonate per violino con accompagnamento di viola ....all printed parts

Romberg, Bernhard

• 3 konzertante Duos Op.2 ....3 Duets Violin and cello parts
• Divertimento über oesterreichische Volkslieder ....Guitar and Cello Parts

Rossini, Gioacchino

• 6 Clarinet Duos ....No.3 Una Voce Poco Fa
• 6 Clarinet Duos ....No.4 Dunque Io Son
• 6 Clarinet Duos ....No.1 A Szeviliai Borbely
• 6 Clarinet Duos ....No.2 Largo Al Factotum
• 6 Clarinet Duos ....No.6 Di Si Felice Inesto
• 6 Clarinet Duos ....No.5 Zitti Zitti, Piano Piano
• Variations for Clarinet in Bb and Piano ....Variations for Clarinet in Bb and Piano (Rossini, Gioacchino)

Rubinstein, Anton

• 3 Mélodies caractéristiques ....n°2 - Nocturne sur l'eau
• 3 Mélodies caractéristiques ....n°3 - La Cataracte
• 3 Mélodies caractéristiques ....n°1 - Chanson russe
• Bal Costume, Op.103 ....Complete Score

Saint-Saëns, Camille

• Duettino, Op.11 ....Complete Score

Sampietro, Carlo

• Duetto per Arpa (o Cembalo) e Viola ....Complete parts (Harp, Viola)

Satie, Erik Alfred Leslie

• Trois Morceaux en Forme de Poire
  avec une manière de commencement, une prolongation du même et un en plus, suivi d'une redite ....Piano score

Sauret, Émile

• Scherzo Fantastico Op.9 ....Violin and Piano parts

Scharwenka, Xaver

• Nordisches, Op.21 ....No.1
• Viola Sonata Op.106 ....Viola and Piano parts

Schiffelholz, Johann Paul

• Duo for two Gallichons ....Lute 1 part for Gallichon Duo
• Duo for two Gallichons ....Lute 2 part for Gallichon Duo
• GallichonDuoNo2 ....Lute 1 part
• GallichonDuoNo2 ....Lute 2 part

Schmitt, Joseph

• Air Varié ....Score

Schubert, Franz

• 2 Marches charactéristiques in C for piano duet (Op.121) ....Score
• 3 Marches Militaires, D.733 ....Score
• 3 Marches Militaires, D.733 ....Allegro vivace - Transcription for piano solo
• 4 Ländler, D.814 ....Complete Score
• 4 Polonaises, D.599 ....Complete Score
• 4 Polonaises, D.599 ....piano solo arrangement
• 6 Grandes Marches, D.819 ....Complete Score
• 6 Polonaises, D.824 ....piano solo arrangement
• 6 Polonaises, D.824 ....Complete Score
• 6 Polonaises, D.824 ....piano solo arrangement
• 8 Variations on a French Song, D.624 ....Complete Score
• 8 Variations on an Original Theme, D.813 ....Complete Score
• Aria and Duet for Hérold's opera 'Das Zauberglöckchen', D.723 ....Duet: Zedir & Bedur (Full score)
• Aria and Duet for Hérold's opera 'Das Zauberglöckchen', D.723 ....Aria: Azolin (Full score)
• D.818 - Divertissement à la hongroise in g for piano duet ....piano solo arrangement
• D.818 - Divertissement à la hongroise in g for piano duet ....Complete
• D.951 - Rondo in A for piano duet ....Complete
• Der vierjährige Posten, D.190 ....2. Duet 'Du guter Heinrich...Du süsses Kind'
• Divertissement, D.823 ....Rondeau Brillant
• Divertissement, D.823 ....Andantino Variee
• Divertissement, D.823 ....Tempo di Marcia
• Grand Funeral March, D.859 ....Complete Score
• Grand March Heroique, D.885 ....Complete Score
• Kindermarsch, D.928 ....Complete Score
• Overture to 'Fierabras', D.798 ....Complete Score
• Overture, D.668 ....Complete Score
• Overture, D.675 ....Complete Score
• Rondo, D.608 ....Complete Score
• Sonata for Piano Duet, D.617 ....Complete Score
• Sonata for Piano Duet, D.812 ....Complete Score
• Sonatine, D.968 ....Complete Score
• Trois Marches héroïques ....Score
• Variations on a Theme from Herold's 'Marie', D.908 ....Complete Score
• Variations on an Original Theme, D.603 ....Complete Score

Servais, Adrien-François

• 6 Caprices for Cello, Op.11 ....Complete Cello 1 part
• Fantasie sur Deux Airs Nationaux Anglais ....Violin and Cello Parts

Sideris, Nikolas

• My Fucking Life ....No description given (please fix)

Spohr, Louis

• 3 Concertant Duos Op.3 for 2 Violins ....Parts of Violin I and II
• 3 Grand Duos Op.39 for 2 Violins ....Parts of Violin I and II
• 3 Grosse Duette fur 2 Violinen ....Violin I and II Complete parts
• Duets for 2 Violins, Op.148 ....Violin 2 part
• Duets for 2 Violins, Op.148 ....Violin 1 part
• Duetto a Violino e Viola ....Violin and Viola parts
• Sonate concertante : pour harpe ou pianoforte et violon ou violoncelle ....Parts
• Trois Duos Concertant pour Deux Violon Op.67 ....Parts of Violin I and II

St. George Tucker, Tui

• Duo Sonata for treble recorder and other woodwinds ....I. Allegro - complete score
• Five Quartertone Duets ....Complete Score
• Halte Des Lebens for voice and flute ....Complete Score
• Serenade for Two Violas ....Complete Score
• Serenade for Two Violas II ....Complete Score
• The Voice of the Lord ....Complete Score

Tartini, Giuseppe

• Caprices ....Violin and Basso parts

Tassistro, Pietro

• Duetto a Violino e Viola ....Vl,Va parts
• Duetto a Violino e Viola a Pietro Morardet ....Vl,Va parts
• Duetto a Violino e Viola No.4 ....Vl,Va parts
• Duetto for Violin and Viola No.1 ....Violin and Viola parts
• Gran Duetto per Violino e Viola No.5 ....Vl,Va parts

Tchaikovsky, Pyotr Ilyich

• 1812 Overture ....Transcription for piano duet (4 hands)
• 6 Duets, Op.46 ....6. Dawn - Arranged for Voices with Orchestra by Tchaikovsky
• Mazeppa ....No.2: Scene, Arioso, and Duet
• Romeo and Juliet (duet) ....Full Score
• Romeo and Juliet (duet) ....Vocal Score
• Romeo and Juliet (overture-fantasia) ....3rd version (1880) - Transcription for piano duet (4 hands)
• Souvenir d'un lieu cher, Op.42 ....1. Meditation - Violin / Piano score
• Souvenir d'un lieu cher, Op.42 ....1. Meditation - Violin part
• Symphony No.1, Op.13 ....Transcription for piano duet (4 hands)
• Symphony No.2, Op.17 ....Transcription for piano duet (4 hands) by the composer
• Symphony No.4, Op.36 ....Transcription for piano duet (4 hands)
• Symphony No.5, Op.64 ....Transcription for piano duet - Piano I part
• Symphony No.5, Op.64 ....Transcription for piano duet - Piano II part

Telemann, Georg Philipp

• 12 Duos for Violin and Cello ....Duet No.1 - Score
• 12 Duos for Violin and Cello ....Duet No. 7 - Score
• Der getreue Music-Meister ....Duet for 2 Flutes or Violins TWV 40:107
• Double Recorder Sonata ....Complete Score

Thalberg, Sigismond

• L'Art du Chant appliqué au Piano, Transcriptions des célèbres Oeuvres des grandes Maitres, Op.70 ....11. Duetto dall'opera Der Freischütz, di Weber
• L'Art du Chant appliqué au Piano, Transcriptions des célèbres Oeuvres des grandes Maitres, Op.70 ....14. Transcription of the duet 'La dove prende' from Mozart's 'Die Zauberflöte'
• L'Art du Chant appliqué au Piano, Transcriptions des célèbres Oeuvres des grandes Maitres, Op.70 ....6. Perch, mi guardi e piangi, duetto da Zelmira, Opera di Rossini

Vanhal, Johann Baptist

• 6 Sonatas for Flute (or Violin) and Harpsichord, Op.10 ....Full score

Verdi, Giuseppe

• La Traviata ....Act II, No. 5: Scene and Duet

Vieuxtemps, Henri

• Album-Pices op 6,7,8,40,45 ....piano score
• Bouquet Américain op 33 ....Piano score
• Elegia op 30 for Violin and Piano ....Violin and Piano parts
• Fantasia appassionata op 35 -Vl,Pf- ....score
• Les Arpeges op15-Capriccio for Violin and Piano or Orchestra ....Piano part
• Romanzen ohne worte, Op.8 ....3. Barcarolle - score and part
• Romanzen ohne worte, Op.8 ....Violin / Piano Score - complete
• Trois Morceaux de Salon, Op.32 for Violin and Piano ....2. Rondino - score
• Trois Morceaux de Salon, Op.32 for Violin and Piano ....3. La Chasse - score and part

Viotti, Giovanni Battista

• 3 Concertant Duos Op.29 ....Transcription for 2 cellos - cello 2 part
• 3 Concertant Duos Op.29 ....Transcription for 2 cellos - cello 1 part
• 3 Serenate Op.23 ....Violins parts

Wagner, Wilhelm Richard

• Polonaise in D ....No.2 - Polonaise in D for piano 4-hands

Weber, Carl Maria von

• 7 Variations on a theme from Silvana ....clarinet part
• 7 Variations on a theme from Silvana ....Complete Score
• Barcarolle Venitienne Variée for Flute and Guitar, Op.38 ....Flute and Guitar Parts
• Etude and Variations on a Norwegian Theme for Flute and Guitar, Op.39 ....Flute and Guitar Parts

Wenzel, Hermann

• 4 Duets for 2 Cellos and Piano ....Piano score and 2 cellos parts

Widor, Charles-Marie

• Conte d'Avril, Op.64 ....Piano 2 Part
• Conte d'Avril, Op.64 ....Covers
• Conte d'Avril, Op.64 ....Piano 1 Part

Wieniawski, Józef

• Fantasia for 2 Pianos, Op.42 ....Part for Piano I & Piano II - complete
• Four Etudes for Two Violins, Op.18 ....Score of Etude No.1
• Four Etudes for Two Violins, Op.18 ....Etudes 5-8 score
• Four Etudes for Two Violins, Op.18 ....Score of Etude No.4
• Four Etudes for Two Violins, Op.18 ....Etudes 1-4 score
• Four Etudes for Two Violins, Op.18 ....Score of Etude No.3

Wranitzky, Paul

• 3 Duets for 2 Flutes, Op.42 ....Duets: Parts