Once More 'Round The Sun Bill Kelliher, Brent Hinds, Brian Downey, Brann Dailor, Phil Lynott, Troy Sanders Gitarre, E-Gitarre Pop, Pop Rock, Volksmusik, Metall, Hard Rock
Open Eyes Wayne Swinny, Josey Scott, Allie Heard, Michael Baskette Gitarre, E-Gitarre Metall, New Age, Pop Rock, Rock
Open Your Eyes Deryck Jayson Whibley, Bonnie McKee, Deryck Whibley, Eric Weaver, Alter Bridge, Aaron Lewis Schlagzeug, Gitarre, E-Gitarre, Klavier Volksmusik, Punk, Alternative Pop/Rock, Indie-Rock, Evangelium
Open Up Now Jonathan Davis, Atticus Ross, Reginald Arvizu, David Silveria, James Shaffer, Scott Spock Gitarre Pop Rock, Rock, Metall
Operation Ground And Pound Vadim Pruzhanov, Herman Li, Sam Totman, ZP Theart Gitarre Volksmusik, Rock, Pop, Pop Rock, Metall
One By One Wayne Shorter, Art Blakey, Enya, Ellen Allard, Nicky Ryan, Kitty Wells Gitarre, Klavier, E-Gitarre Tanz, Jazz, Bühne & Leinwand, Pop, Metall
Opium Of The People Slipknot, Chris Fehn, Corey Taylor, M. Shawn Crahan, Sid Wilson, Shawn Crahan Gitarre, E-Gitarre Metall, Rock
Orchids Shawn Economaki, Josh Rand, Joel Ekman, Stone Sour Gitarre, E-Gitarre Rock, Alternative Rock, Metall
Orion Cliff Burton, Metallica, James Hetfield, Gabriela Quintero Lopez, Lars Ulrich, Rodrigo y Gabriela Gitarre, E-Gitarre Hard Rock, Metall, Flamenco, Pop Rock, Folk Welt und Land
Operation: Mindcrime Michael Wilton, Chris DeGarmo, Geoff Tate Gitarre Progressive Metal, Album Rock, Heavy Metal, Hard Rock, Rock
Ose Shalom John Leavitt, Traditional Hebrew Text, Judith Silver, Traditional Hebrew Song, N. Hirsh, Richard Cook Kontrabass, Bass, Bratsche, Klavier, Sopran Evangelium, Folk Welt und Land, Volksmusik, Metall
ORDINARY MAN Billy Walsh, Ozzy Osbourne, Elton John, Duff McKagan, Chad Smith, Andrew Watt Klavier, Gitarre, E-Gitarre Punk, Piano Rock, Rock, Britischer Metal, Pop Rock
Orinoco Flow Nicky Ryan, Celtic Woman, Sarah Cellobat Chaffee, Roma Ryan, Kirby Shaw Ukulele, Klavier, Gitarre, Sopran, Bratsche, Cello Celtic, Pop, Folk Welt und Land, Easy Listening, Bühne & Leinwand
Original Fire Tim Commerford, Chris Cornell, Brad Wilk, Tom Morello Gitarre Pop Rock, Rock, Metall, Pop, Volksmusik
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 Gitarre, E-Gitarre Punk, Emo, Metall, Pop, Alternative Rock
