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: Edvard Grieg (1843–1907)
Work: Symphony No. 6
Composer: Arnold Bax (1883–1953)
Work: 6 Gedichte von Scheffel, Mörike, Goethe und Kerner: 6. Zur Ruh, zur Ruh!
Composer: Hugo Wolf (1860–1903)
Work: 6 Gesänge, Op. 6: 6. Nachtigallen schwingen lustig
Composer: Johannes Brahms (1833–1897)
Work: Poèmes juifs, Op. 34: 6. Chant d'amour
Composer: Darius Milhaud (1892–1974)
Work: 6 Gesänge, Op. 19a: 2. Das erste Veilchen
Composer: Felix Mendelssohn (1809–1847)
Work: 6 Partsongs, Op. 18: 1. Sortunut ääni (The Broken Voice)
Composer: Jean Sibelius (1865–1957)
Work: 6 Etudes-tableaux, Op. 33
Composer: Sergei Rachmaninoff (1873–1943)
Work: 6 Lieder (Im Freien zu singen), Op. 41: 5. Mailied
Work: 2 Konzertetüden, S. 145
Composer: Franz Liszt (1811–1886)
Work: 6 Love Songs, Op. 40: 3. Thy Beaming Eyes
Composer: Edward MacDowell (1861–1908)
Work: Ave Maria No. 6
Composer: Heitor Villa-Lobos (1887–1959)
Work: Recuerdos de viaje, Op. 71: 6. Rumores de la Caleta
Composer: Isaac Albéniz (1860–1909)
Work: 12 Gesänge, Op. 1: 6. Tanzlied im Mai
Composer: Robert Franz (1815–1892)
Work: Concerto for Four Violins, Cello and Continuo, Op. 17, No. 6
Composer: Jacques Aubert (1689–1753)
Work: 6 Deutsche Lieder, Op. 103
Composer: Louis Spohr (1784–1859)
Work: Visions fugitives, Op. 22: 6. Con eleganza
Composer: Sergey Prokofiev (1891–1953)
Work: Minneweisen: Nun die Schatten dunkeln, Op. 6, No. 2 ("The shadows darken")
Composer: Adolf Jensen (1837–1879)
Work: 6 Lieder, Op. 39: 5. Wandl' ich in den Wald des Abends
Work: 15 Etudes de Virtuosité, Op. 72: 6. Presto
Composer: Moritz Moszkowski (1854–1925)
Work: Ariettes oubliées: 6. Spleen (c. 1885 - 1887)
Composer: Claude Debussy (1862–1918)
Work: Nature Studies: Hour of Nine, Op. 23, No. 6
Composer: Cecil Burleigh (1885–1980)
Work: Spanisches Liederspiel, Op. 74: 6. Melancholie
Composer: Robert Schumann (1810–1856)
Work: Sieben Lieder: Es geht ein Wehen, Op. 62, No. 6
Work: Nouveaux quatuors en six suites: Quatuor No. 6 in E Minor, TWV 43:e4
Composer: Georg Philipp Telemann (1681–1767)
Work: Violin Concerto No. 1 in D Major, Op. 6 (c. 1817)
Composer: Nicolò Paganini (1782–1840)
Arranger: August Wilhelmj (1845–1908)
Work: 8 Pieces for 4 Timpani: 6. March
Composer: Elliott Carter (1908–2012)
Work: Feast at Solhaug, Op. 6: Margit's Ballad
Composer: Wilhelm Stenhammar (1871–1927)
Work: Piano Pieces, Op. 118: 3. Ballade in G Minor, Op. 118, No. 3. Allegro energico
Work: 6 Lieder für eine Frauenstimme: 3. Die Spinnerin
Work: String Quartet in D Major, Op. 33, No. 6, H.III:42
Composer: Joseph Haydn (1732–1809)
Work: 6 Gesänge, Op. 30: 6. An die Wolke (c. 1870)
Work: 6 Gesänge, Op. 7: 4. Volkslied
Work: Minuetto, Op. 56, No. 6
Work: Short Sonata No. 6 for Piano
Composer: Otto Luening (1900–1996)
Work: Concerto for Organ and Orchestra in B-flat Major, HWV 311 (Op. 7, No. 6)
Composer: George Frideric Handel (1685–1759)
Work: Legend in C-sharp Minor, Op. 59, No. 6 (c. 1880 - 1881)
Composer: Antonín Dvorák (1841–1904)
Work: Lieder ohne Worte, Op. 67: 6. Allegretto non troppo
Work: 16 German Songs: 6. Die Himmelsaugen
Composer: Maude Valérie White (1855–1937)
Work: 6 Songs, Op. 48: 1. Bitten
Composer: Ludwig van Beethoven (1770–1827)
Work: La canzone dei ricordi, Op. 68a: 6. A'l folto bosco, placida ombría
Composer: Giuseppe Martucci (1856–1909)
Work: Hommage à Stravinsky, Prokofiev, and Shostakovich
Composer: Alfred Schnittke (1934–1998)
Work: 6 Lieder aus Lotosblätter, Op. 19: 2. Breit über mein Haupt dein schwarzes Haar
Composer: Richard Strauss (1864–1949)
Work: Study No. 6: Andante (c. 1912 - 1913)
Composer: Charles Ives (1874–1954)
Work: The Seven Last Words of Christ, H.XX/1a: Sonata VI: Consummatum est
Work: Iolanta, Op. 69: 6b. Kto mozhet sravnit'sa s Matil'doy moyey
Composer: Pyotr Ilyich Tchaikovsky (1840–1893)
Work: Cello Sonata in C Minor, Op. 6
Composer: Samuel Barber (1910–1981)
Work: 6 Lieder, Op. 57: 4. O Jugend, o schöne Rosenzeit
Work: 7 Canciones populares españolas: 6. Canción
Composer: Manuel de Falla (1876–1946)
Work: 6 Grand Marches, D. 819: 3. March in B Minor
Composer: Franz Schubert (1797–1828)
Work: Hexaméron, S. 392
Composer: Frederic Chopin (1810–1849)
Work: Divertissement, Op. 6
Composer: Albert Roussel (1869–1937)
Work: Twelve Etudes For Piano (1986): Etude No. 6 (nocturne)
Composer: William Bolcom (1938–)
Work: Serenade in E-flat Major, Op. 6
Composer: Josef Suk (1874–1935)
Work: 8 Lieder, Op. 6: 5. Ghasel
Composer: Arnold Schoenberg (1874–1951)
Work: 8 Lieder, Op. 6: 8. Der Wanderer
Work: 6 Gesänge, Op. 22: 6. So weit von hier (c. 1870)
Work: 49 deutsche Volkslieder, WoO 33, Book 6: 42. In stiller Nacht, zur ersten Wacht (c. 1893 - 1894)
Work: Musical Offering, BWV 1079: Fuga (Ricercata) a 6 voci
Composer: Johann Sebastian Bach (1685–1750)