Work: Prelude No. 6
Composer: Antón García Abril (1933–)
Work: Andalucía: 6. Malagueña (c. 1927)
Composer: Ernesto Lecuona (1896–1963)
Work: 6 Gedichte von N. Lenau und Requiem, Op. 90
Composer: Robert Schumann (1810–1856)
Work: 6 English Folksongs: 5. Rolling in the dew (c. 1935)
Composer: Ralph Vaughan Williams (1872–1958)
Work: Lyric Pieces, Book I, Op. 12: 6. Norsk
Composer: Edvard Grieg (1843–1907)
Work: 6 Chants polonais, S. 480
Composer: Frederic Chopin (1810–1849)
Arranger: Franz Liszt (1811–1886)
Work: Péchés de vieillesse, Vol. 10, Miscellanée pour piano: 6. Petite caprice (c. 1880 - 1885)
Composer: Gioachino Rossini (1792–1868)
Work: 6 Little Piano Pieces, Op. 19: 4. Rasch, aber leicht
Composer: Arnold Schoenberg (1874–1951)
Work: 6 Chansons: 6. Verger
Composer: Paul Hindemith (1895–1963)
Work: Romanian Folkdances, BB 76: 6. Maruntel (Fast Dance)
Composer: Béla Bartók (1881–1945)
Work: Serenade in E-flat Major, Op. 6: 2. Allegro ma non troppo e grazioso
Composer: Josef Suk (1874–1935)
Work: 6 Canciones Castellanas: Selection (unspecified)
Composer: Jesús Guridi (1886–1961)
Work: 6 Little Preludes, BWV 933-938
Composer: Johann Sebastian Bach (1685–1750)
Work: Six Ländler, K. 606
Composer: Wolfgang Amadeus Mozart (1756–1791)
Work: 6 Einfache Lieder, Op. 9: 4. Liebesbriefchen
Composer: Erich Wolfgang Korngold (1897–1957)
Work: 25 or 6 to 4
Composer: Robert Lamm (1944–)
Work: Davidsbündlertänze, Op. 6: Selection (unspecified)
Work: It All Adds Up
Composer: Paul Lansky (1944–)
Work: 6 Songs, Op. 25: 5. Music, when soft voices die
Composer: Roger Quilter (1877–1953)
Work: Piano Concerto No. 6 in D Major, H.XVIII:11: 1. Vivace (-. 1784)
Composer: Joseph Haydn (1732–1809)
Work: Sonatina in D Major, Op. 36, No. 6: Rondo
Composer: Muzio Clementi (1752–1832)
Work: Tristis est anima mea
Composer: Carlo Gesualdo (1561–1613)
Work: Madrigals, Book 6: Già piansi nel dolore
Work: O vos omnes
Work: Tenebrae factae sunt
Work: In monte Oliveti
Work: 6 Original Canzonettas, Set 1: Recollection, H.XXVIa:26
Work: Waltz in B-flat Major, Op. 31, No. 6
Composer: Reinhold Glière (1875–1956)
Work: 6 Canciones Castellanos: 2. ¡Sereno!
Work: Piano Trio, Op. 6
Composer: Gail Kubik (1914–1984)
Work: Come, blessed bird
Composer: Edward Johnson (1572–1601)
Work: Symphony in B-flat Major, Op. 6, No. 4
Composer: Johann Christian Bach (1735–1782)
Work: Invenzioni: 6. Tranquillo
Composer: Goffredo Petrassi (1904–2003)
Work: Concerto for Violin and Piano in F Major, H.XVIII:6 (-. 1766)
Work: Mentra Gwen, H.XXXIb:6
Work: Six Moments musicaux dédiés à mon fils, Op. 44
Composer: György Kurtág (1926–)
Work: 6 Bagatelles, Op. 126: Bagatelles (unspecified)
Composer: Ludwig van Beethoven (1770–1827)
Work: Two Pieces: Hungarian Dance, Op. 6, No. 2
Composer: Sergei Rachmaninoff (1873–1943)
Arranger: Samuel Dushkin (1891–1976)
Work: Album d’un voyageur, S. 156: Book I, Impressions et poésies: 7. Psaume (de l'église à Genève)
Composer: Franz Liszt (1811–1886)
Work: 6 Metamorphoses after Ovid, Op. 49: 6. Arethusa
Composer: Benjamin Britten (1913–1976)
Work: 6 Metamorphoses after Ovid, Op. 49: 2. Phaeton
Work: 6 Metamorphoses after Ovid, Op. 49: 1. Pan
Work: Bleib bei uns, denn es will Abend werden, BWV 6
Work: Piano Sonata No. 6, Op. 128
Composer: Ernst Krenek (1900–1991)
Work: Elegie, Op. 36: 6. Zweifelnder Wunsch
Composer: Othmar Schoeck (1886–1957)
Work: 6 Quartets, Op. 112: 3-6. 4 Zigeunerlieder
Composer: Johannes Brahms (1833–1897)
Arranger: Frank Damrosch (1859–1937)
Work: 6 Quartets, Op. 112: 1. Sehnsucht (c. 1888)
Work: Vespro della Beata Vergine, SV 206: XIV. Magnificat (II), SV 206a:12
Composer: Claudio Monteverdi (1567–1643)
Work: Suite No. 6 in D Minor, Op. 113: 3. March
Composer: Franz Paul Lachner (1803–1890)
Work: Sound Phantoms 6
Composer: Meyer Kupferman (1926–2003)
Work: 6 Lieder, Op. 45: 2. Die Trauernde
Composer: Robert Franz (1815–1892)
Work: Ouverture in C Major, TWV 55:C6 (c. 1721)
Composer: Georg Philipp Telemann (1681–1767)
Work: Pasillo de concierto No. 6
Composer: Emilio Murillo (1880–1942)
Work: 6 Etudes en forme de Canon, Op. 56: 6. Adagio
Arranger: Claude Debussy (1862–1918)
Work: 6 Etudes en forme de Canon, Op. 56: 5. Pas trop vite
Work: 6 Etudes en forme de Canon, Op. 56: 4. Espressivo
Work: 6 Etudes en forme de Canon, Op. 56: 2. Avec beaucoup d'expression
Work: Játékok, Vol. V: 6. A Voice in the Distance (For Alfred Schlee's 80th birthday)
Work: Játékok, Vol. VI: 6. Sirens of the Deluge
Work: Six Pieces from Cinderella, Op. 102: Waltz (Cinderella Going to the Ball)
Composer: Sergey Prokofiev (1891–1953)