Once More 'Round The Sun Bill Kelliher, Brent Hinds, Brian Downey, Brann Dailor, Phil Lynott, Troy Sanders Guitar, Electric guitar Pop, Folk, Hard Rock, Metal, Rock
Open Eyes Wayne Swinny, Josey Scott, Allie Heard, Michael Baskette Guitar, Electric guitar New Age, Rock, Metal, Pop Rock
Open Your Eyes Deryck Jayson Whibley, Bonnie McKee, Deryck Whibley, Eric Weaver, Alter Bridge, Aaron Lewis Piano, Guitar, Electric guitar, Drum Set, Drums Contemporary Christian, Alternative Pop/Rock, Indie Rock, Pop, alternative
Open Up Now Jonathan Davis, Atticus Ross, Reginald Arvizu, David Silveria, James Shaffer, Scott Spock Guitar Metal, Pop Rock, Rock
Operation Ground And Pound Vadim Pruzhanov, Herman Li, Sam Totman, ZP Theart Guitar Pop Rock, Metal, Rock, Folk, Pop
One By One Wayne Shorter, Art Blakey, Enya, Ellen Allard, Nicky Ryan, Kitty Wells Piano, Guitar, Electric guitar Adult Alternative, Folk, Metal, Dance, Easy Listening
Opium Of The People Slipknot, Chris Fehn, Corey Taylor, M. Shawn Crahan, Sid Wilson, Shawn Crahan Guitar, Electric guitar Rock, Metal
Orchids Shawn Economaki, Josh Rand, Joel Ekman, Stone Sour Guitar, Electric guitar Alternative Rock, Metal, Rock
Orion Cliff Burton, Metallica, James Hetfield, Gabriela Quintero Lopez, Lars Ulrich, Rodrigo y Gabriela Guitar, Electric guitar Rock, Hard Rock, Pop Rock, Pop, Folk
Operation: Mindcrime Michael Wilton, Chris DeGarmo, Geoff Tate Guitar Metal, Album Rock, Rock, Progressive Metal, Hard Rock
Ose Shalom John Leavitt, Traditional Hebrew Text, Judith Silver, Traditional Hebrew Song, N. Hirsh, Richard Cook Piano, Soprano, Bass, Viola, Double Bass Metal, Folk World & Country, Gospel, Folk
ORDINARY MAN Billy Walsh, Ozzy Osbourne, Elton John, Duff McKagan, Chad Smith, Andrew Watt Guitar, Piano, Electric guitar Album Rock, Gospel, Hard Rock, Pop Rock, Pop
Orinoco Flow Nicky Ryan, Celtic Woman, Sarah Cellobat Chaffee, Roma Ryan, Kirby Shaw Guitar, Piano, Viola, Violin, Cello, Soprano Folk World & Country, Easy Listening, alternative, Celtic, Pop
Original Fire Tim Commerford, Chris Cornell, Brad Wilk, Tom Morello Guitar Folk, Metal, Pop Rock, Rock, Pop
Our Lawyer Made Us Change The Name Of This Song So We Wouldn't Get Sued Peter Wentz, Joe Trohman, Patrick Stumph, Pete Wentz, Andrew Hurley, Patrick Stump Guitar, Electric guitar Alternative Rock, Punk-Pop, Rock, Emo, Folk
