Old Canes
indie rock, singer-songwriter, folk
Old Crow Medicine Show
americana, bluegrass, country, folk
Old Dominion
alternative rock, black metal, country, rock
Old Funeral
black metal, blackened death metal, death metal
Old Man Gloom
doom metal, metal, post-metal, post-rock
Old Man Markley
bluegrass, folk punk, folk
Old School Freight Train
americana, bluegrass, newgrass
Old Silver Key
black metal, post-rock, shoegaze
Old Soul
black metal, post-hardcore, post-metal, screamo
Old Time Relijun
indie rock, lo-fi, noise rock
Oldfish
downtempo, electronic, indie pop
Ole Paus
folk rock, singer-songwriter, folk
Oleander
alternative rock, grunge, post-grunge, rock
