 | 2 portraits. | On CD: Wunderbare Mandarin : op. 19 = The miraculous mandarin Deux portraits : op. 5 |
| UNDETERMINED | 2 silent film scores. | On Recording: Two silent film scores |
 | 20 20 vision for the future | On Cassette: 2020 vision for the future |
| | 20 Greatest hits / Little Richard. | CD Title |
| | 20 all-time greatest hits / Brown, James, 1928- | CD Title |
| | 20 chansons dor / Aznavour, Charles. | CD Title |
| | 20 golden hits of Hawaii / Wolfgramm, Nani. | CD Title |
| | 20 of the best | On CD: Polkatime 20 of the best |
| | 20 regards sur lEnfant Jésus. | On CD: Vingt regards sur lEnfant Jésus |
| | 20 years of hits | On CD: Anniversary, 20 years of hits the first lady of country music |
| UNDETERMINED | 200 years of American heritage in song / | Recording Title |
| | 2000 National Concert Band Festival / | CD Title |
| | 2001 Jazz Fest wBobby Watson / | CD Title |
| | 2001 Truman State University New Music Festival. Concert I, Ensembles / | Cassette Title |
| | 2001 Truman State University New Music Festival. Concert II, Chamber music / | Cassette Title |
| | 2002 Truman State University Gold Medal Concert / | CD Title |
| | 2020 vision for the future / | Cassette Title |
| | 20s. | On CD: RCA Victor jazz, the first half-century, the 20s-60s. The 20s |
| | 20th c. German sacred music / | CD Title |
| UNDETERMINED | 20th century settings for trumpet / Plog, Anthony. | Recording Title |
| | 20th-century German sacred music | On CD: 20th c. German sacred music |
 | 21 Lieder / Schubert, Franz, 1797-1828. | LP Title |
| | 21 flûtes du Moyen-Age au Baroque. | On CD: René Clemencic et ses flûtes 21 flûtes du Moyen-Age au Baroque. |
| | 21 ways to defuse anger and calm people down / Staver, Michael. | Cassette Title |
| | 22 best-loved favorites | On CD: Mormon Tabernacle Choirs greatest hits 22 best-loved favorites. |
| | 23. Psalm. / Schubert, Franz, 1797-1828. | On CD: German Mass, D. 872 ; Salve Regina, D. 379 Psalm 23, D. 706 Psalm 92, D. 953 Hymn to the Holy Ghost, D. 964 Mass in G major, D. 167 |
| | 24 caprices, op. 1 for solo violin / Paganini, Nicolò, 1782-1840. | CD Title |
| | 24 preludes, op. 11 ; 5 preludes, op. 74 ; Poem, op. 32, no. 1 / Scriabin, Aleksandr Nikolayevich, 1872-1915. | CD Title |
| | 24 préludes, op. 28 / Chopin, Frédéric, 1810-1849. | CD Title |
| | 245 | On CD: Outward bound |
| | 25 classic performances | On CD: Fat man 25 classic performances |
| | 25 years of essential rock | On CD: Rolling Stone collection, 1982-1986 25 years of essential rock. |
| | 25 years of essential rock | On CD: Rolling Stone collection, 1986-1992 25 years of essential rock. |
| | 25 years of essential rock. | On CD: Rolling Stone collection, 1967-1969 25 years of essential rock. |
| | 25 years of essential rock. | On CD: Rolling Stone collection, 1969-1970 25 years of essential rock. |
| | 25 years of essential rock. | On CD: Rolling Stone collection, 1973-1977 25 years of essential rock. |
| | 25 years of essential rock. | On CD: Rolling Stone collection, 1977-1982 25 years of essential rock. |
| | 25-year retrospective concert of the music of John Cage / Cage, John. | CD Title |
| | 25th anniversary reunion / | LP Title |
| | 25th anniversary, International Double Reed Society / | CD Title |
| | 26-2 | On CD: Quartets live at the Village Vanguard |
| | 27 national anthems. | On CD: National anthems of the world |
