Artists
- O. C. Smith (1)
- O. Schlinder (1)
- Oak ridge boys (1)
- Oakley Haldeman (2)
- Oascar Hammerstein II (1)
- Oasis (1)
- Obernkirchen Kinderchor (1)
- Odetta (4)
- Odetta Holmes (1)
- Odis Echols (1)
- Ogden Nash (1)
- Okinawan folk band BEGIN (1)
- Oktoberklub (1)
- Old Chinese Folk Song (1)
- old cowboy song (1)
- Oley Speaks (1)
- Oliver (1)
- Oliver Holden (1)
- Oliver Nelson (1)
- Oliver Wallace (1)
- Olivia Newton John (5)
- Olivia Newton-John (3)
- Olivier Toussaint (1)
- Ollie Blanchard and Johnny Malone (1)
- Ollie Kennedy (1)
- onbekend (2)
- One Direction (2)
- One Republic (2)
- Only Boys Aloud (1)
- Orchestra of Lucho Bermudez (1)
- Oren E. Munger (1)
- Orhan Gencebay (1)
- Orietta Berti (1)
- origin uncertain (1)
- Origin unknown (1)
- Original Dixieland Jazz Band (1)
- Original Zenith Brass Band (1)
- Orlando Murden (1)
- Ornette Coleman (1)
- Orquesta Amador Perez (hijo) (1)
- Orquesta Aragón (1)
- Orquesta C. A. D. A. (1)
- Osborne Brothers (1)
- Oscar Brand (1)
- Oscar Brown Jr. (2)
- Oscar Eliason (1)
- Oscar Hammerstein (4)
- Oscar Hammerstein II (65)
- Oscar Levant (2)
- Oscar Natzka (1)
- Oscar Peterson (7)
- Oscar Peterson and many others (1)
- Oscar Pettiford (1)
- Oscar Rasbach (1)
- Oscar Straus (2)
- Oscar Stuart Blandemer (1)
- Oscar Washington (1)
- OscarHammerstein II (1)
- Osipov State Russian Folk Orchestra (1)
- Oskar Ahnfelt (1)
- Osvaldo Farres (3)
- Oswald Durand (1)
- Otha Young (1)
- others (1)
- Otis Blackwell (2)
- Otis Blackwell (Jack Hammer) (1)
- Otis Blackwood (1)
- Otis Reading (1)
- Otis Redding (1)
- Otis Rene (2)
- Otis Skillings (1)
- Otto Bonnell (1)
- Otto Harbach (13)
- Otto Harbach & Oscar Hammerstein II (1)
- Otto Harbach and Oscar Hammerstein II (2)
- Owl City (4)
- Owl City arr. Navybluejeans and R.C.O Lomboy (1)
- Ozdemir Erdogan (1)
- Ozzy Osbourne (1)
- Ozzy Ozborne (1)