Osaka Popstar
pop punk, punk rock, rock
Oscar Brown Jr.
blues, funk, jazz, singer-songwriter, vocal jazz
Oscar D'León
salsa, venezuela, world music
Oscar Isaac
singer-songwriter, soundtrack, folk
OSI
metal, progressive metal, progressive rock
Osker
emo, pop punk, punk rock, ska
Osmi Putnik
hard rock, heavy metal, metal
Osmium
death metal, groove metal, metal, metalcore, thrash metal
Ossastorium
death metal, melodic death metal
Ossian
heavy metal, power metal, folk
Ossler
alternative rock, rock, singer-songwriter
Ost+Front
industrial metal, metal, neue deutsche härte
Ostfront
industrial metal, neue deutsche härte
Ostia
dream pop, gothic rock, shoegaze
Ostrogoth
heavy metal, power metal, speed metal