 | 4 Dialogues. | On CD: Sieben Worte The seven words. Vier Dialoge = Four dialogues |
| | 4 Maryland songs. | On CD: Dialogues & entertainments |
| | 4 Orchesterstücke. Op. 12 Sz51 Orchestral pieces = Pièces pour orchestre Konzert für orchester, Sz116 = Concerto for orchestra = Concerto pour orchestre / Bartók, Béla, 1881-1945. | CD Title |
| | 4 Symphonien ; Haydn-Variationen ; Tragische Ouvertüre ; Akademische Festouvertüre / Brahms, Johannes, 1833-1897. | CD Title |
| UNDETERMINED | 4 Temperament. | On Recording: Symphonie in B ; Die vier Temperamente |
| | 4 ballades / Chopin, Frédéric, 1810-1849. | CD Title |
| | 4 motets sur des thèmes gregoriens. | On CD: Requiem : third version Quatre motets sur des thèmes gregoriens |
| | 4 orchestral suites / Bach, Johann Sebastian, 1685-1750. | CD Title |
| UNDETERMINED | 4 seasons. | On Recording: Four seasons |
| | 4 symphonies / Brahms, Johannes, 1833-1897. | CD Title |
| | 4 symphonies ; Haydn variations ; 5 Hungarian Dances ; Tragic overture ; Academic Festival Overture / Brahms, Johannes, 1833-1897. | CD Title |
| | 4 way street / | CD Title |
| | 40 greatest hits / Williams, Hank, 1923-1953. | CD Title |
| | 40s, Volume 1 | On CD: Nippers greatest hits. The 40s. Volume 1 |
| | 40s. | On CD: RCA Victor jazz, the first half-century, the 20s-60s. The 40s |
| UNDETERMINED | 42nd Street original Broadway cast recording / Warren, Harry, 1893- | Recording Title |
| UNDETERMINED | 42nd Street. / Ropes, Bradford. | On Recording: 42nd Street original Broadway cast recording |
| | 433. / Cage, John. | On CD: Amadinda Percussion Group |
| | 4th time around | On CD: Blonde on blonde |
