Work: 6 Duets, Op. 11: 6. Slava
Composer: Sergei Rachmaninoff (1873–1943)
Work: Six Yemenite Songs
Composer: Chanon Winternitz
Work: 6 Lieder, Op. 23: 6. O Lust, vom Berg ein Lied
Composer: Clara Schumann (1819–1896)
Work: 6 Moments musicaux, D. 780: Moment musical No. 2 in A-flat Major. Andantino
Composer: Franz Schubert (1797–1828)
Work: 6 Lieder, Op. 25: 4. Kommt fein's Liebchen heut? (c. 1870)
Composer: Robert Franz (1815–1892)
Work: Davidsbündlertänze, Op. 6
Composer: Robert Schumann (1810–1856)
Work: Piano Sonata No. 1, Op. 6
Composer: Dmitry Kabalevsky (1904–1987)
Work: Six Branles
Composer: Claude Gervaise (1525–1583)
Work: Mlado Lišce: Draga Prica, Op. 20, No. 6 ("Beloved Fairy Tale")
Composer: Božidar Kunc (1903–1964)
Work: 6 Mélodies, Op. 4/5: 1. Allegro assai in A-flat Major
Composer: Fanny Mendelssohn (1805–1847)
Work: 7 Lieder, Op. 48: 6. Vergangen ist mir Glück und Heil (c. 1860)
Composer: Johannes Brahms (1833–1897)
Work: Triakontameron, Vol. 6: 28. Quixotic Errantry
Composer: Leopold Godowsky (1870–1938)
Work: Nocturne, Op. 6
Composer: Lee Hoiby (1926–2011)
Work: As Vesta was, from Latmos hill descending
Composer: Thomas Weelkes (1576–1623)
Work: Pièces de viole, Livre 4: Suite No. 6 in E Minor: 54. La Matelotte
Composer: Marin Marais (1656–1728)
Work: Andante with Variations in F Minor, H.XVII:6
Composer: Joseph Haydn (1732–1809)
Work: Spanisches Liederbuch, Weltliche Lieder: 6. Wenn du zu den Blumen gehst
Composer: Hugo Wolf (1860–1903)
Work: Sextet in B-flat Major, Op. 6
Composer: Ludwig Thuille (1861–1907)
Work: Symphony No. 6
Composer: William Schuman (1910–1992)
Work: Partita No. 6
Composer: Myroslav Skoryk (1938–2020)
Work: Consolation in E Major, S. 172, No. 2: Un poco più mosso
Composer: Franz Liszt (1811–1886)
Work: 6 Gesänge, Op. 21: 6. Verlass' mich nicht (c. 1865)
Work: Six Dumbshows
Composer: John Harbison (1938–)
Work: 12 Romances, Op. 60: 6. Nochi bezumnïye (Sleepless nights)
Composer: Pyotr Ilyich Tchaikovsky (1840–1893)
Work: "Howdy" Symphony in D Major, S .6 7/8
Composer: P.D.Q. Bach (1807–1742)
Work: Sonata No. 6 for Flute and Piano
Composer: Richard Lane (1933–2004)
Work: Songs for Leontyne: 6. The Serpent
Work: 6 Petites pièces faciles (c. 1802 - 1803)
Composer: Carl Maria von Weber (1786–1826)
Work: Der Feind, Op. 41, No. 6
Composer: Richard Trunk (1879–1968)
Work: Sechs Gesänge, Op. 89: 6. Röselein, Röselein!
Work: Two Preludes, BB A6 (c. 1929)
Composer: Henry Purcell (1659–1695)
Arranger: Béla Bartók (1881–1945)
Work: Violin Sonata in A Major, Op. 5, No. 6 (c. 1700)
Composer: Arcangelo Corelli (1653–1713)
Work: Concerto Grosso in B-flat Major, Op. 6, No. 5
Work: Mazurka in E-flat Minor, Op. 6, No. 4
Composer: Frederic Chopin (1810–1849)
Work: 6 Original Canzonettas, Set 2: Piercing Eyes, H.XXVIa:35
Work: The Celestial Country: Forward, flock of Jesus, No. 6
Composer: Charles Ives (1874–1954)
Work: If flowers could speak, Op. 6
Composer: Mana-Zucca (1894–1981)
Work: 6 Lieder, Op. 67: 1. Drei Lieder der Ophelia: Wie erkenn' ich mein Treulieb vor andern nun?
Composer: Richard Strauss (1864–1949)
Work: 2 Pieces for Piano 6-Hands
Work: Schlagtrio
Composer: Karlheinz Stockhausen (1928–2007)
Work: Six Contrary Dances, S. 39
Work: Ariette a voce sola, Op.6: 10. Respira, mio core
Composer: Barbara Strozzi (1619–1677)
Work: 6 Lieder, Op. 45: 3. Frühlingswonne
Work: 6 Songs, Op. 48: 6. Busslied (c. 1801 - 1802)
Composer: Ludwig van Beethoven (1770–1827)
Work: La mort de Tintagiles, Op. 6
Composer: Charles Martin Loeffler (1861–1935)
Work: Violin Concerto in A Minor, RV 356
Composer: Antonio Vivaldi (1678–1741)
Arranger: Tivadar Nachèz (1859–1930)
Work: 6 Moments Musicaux, Op. 16: 3. Andante cantabile, B minor 1 asset
Work: Symphony No. 6 in B Minor, Op. 74, "Pathétique"
Work: Étude in D-flat Major, Op. 25, No. 8
Work: 6 Lieder, Op. 56: 4. Mit deinen blauen Augen
Work: 6 Gesänge, Op. 3: 5. In der Fremde
Work: 6 Lieder, Op. 68: 3. Säusle, liebe Myrthe
Work: 6 Partsongs, Op. 18: 6. Sydämeni laulu (Song of my Heart)
Composer: Jean Sibelius (1865–1957)
Work: Six Romances: The King of France went up the hill, Op. 62, No. 6
Composer: Dmitry Shostakovich (1906–1975)
Work: Lyric Pieces, Book III, Op. 43: 6. An den Frühling (To Spring)
Composer: Edvard Grieg (1843–1907)
Work: Six Etudes
Composer: Victor Babin (1908–1972)
Work: 9 English Songs: 6. The Wild Flower’s Song
Composer: Paul Hindemith (1895–1963)
Work: Symphony in G Major, Op. 1, No. 6
Composer: Carl Friedrich Abel (1723–1787)
Work: Lyric Pieces, Book VIII, Op. 65: 6. Bryllupsdag på Troldhaugen (Wedding Day at Troldhaugen)
Composer: Arnold Bax (1883–1953)