A Day on the Mountain David C. Benner, Althea Wray, Wesley Pritchard, Ewart G. Abner Jr., The Magnificents, Florent Schmitt Pauken, Bass, Flöte, Klavier, Bratsche, Violine New Age, Erwachsene Alternative, Doo Wop, Rhythm & Blues, Evangelium
Open Up Your Arms Ren Harvieu Klavier, Gitarre Alternative Pop/Rock, Indie Pop, Pop, Erwachsene Alternative, Volksmusik
Ordinary Barenaked Ladies, Bart Hendrickson, Patrick Monahan, Train, Pat Monahan Gitarre, Klavier, E-Gitarre Alternative Pop/Rock, Erwachsene Alternative, Pop Rock, Bühne & Leinwand, Rock
One Sweet World David J. Matthews, Dave Matthews Gitarre, E-Gitarre Volksmusik, Erwachsene Alternative, Jam Band, Alternative Pop/Rock, Amerikanischer Trad Rock
Ordinary Day Vanessa Carlton, Shaina Taub, Toby Anderson Klavier, Gitarre, E-Gitarre Pop, Pop Rock, Easy Listening, Rock, Erwachsene Contemporary-Musik
Orphan Girl Gillian Welch, Emmylou Harris, Emily Crocker Gitarre, Klavier Alternative Country, Pop Rock, Boogie Woogie, Erwachsene Alternative, Rock
Orpheus Franz Liszt, Franz Schubert, Heinrich Poos, Jacques Offenbach, Sara Bareilles, Tim Wheeler Bratsche, Cello, Violine, Orgel, Klavier, Gitarre Rock, Alternative, Pop Rock, Erwachsene Alternative, Indie
Opened Once Jeff Buckley Klavier, Gitarre Alternative Rock, Pop Rock, Alternative Pop/Rock, Erwachsene Alternative, Pop
Only Superstition Chris Martin, Guy Berryman, Jonny Buckland, Jon Buckland, Will Champion, Coldplay Gitarre, Klavier Britpop, Piano Rock, Rock, Alternative Rock, Alternative Pop/Rock
Ordinary Miracle Dave Stewart, Doug Abbott, CAROLE PRIETTO, Rick Hein, Glen Ballard, Sarah McLachlan Klavier, Flöte, Gitarre, Altsaxophon, Klarinette Bühne & Leinwand, Kinder, Musical, Pop, Soundtrack
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
Our Love Is Easy Jesse Harris, Melody Gardot Gitarre, Klavier Rock, Pop Rock, Pop, Erwachsene Alternative, Zeitgenössischer Jazz
Our Lives Elaine Yu, Aaron Kamin, The Calling Klavier, Gitarre Volksmusik, Pop Rock, Pop, Hard Rock, Erwachsene Alternative
Our Time Lily Allen, Mac Huff, Greg Kurstin, Stephen Sondheim, Lee Evans, Cathy Pate Gitarre, Klavier, Bratsche, Trompete, Sopran Klassisch, Alternative Pop/Rock, Broadway, Evangelium, Bühne & Leinwand
Out Of Love Alessia Cara, Gregg Wattenberg, John Ondrasik, Five For Fighting, Dan Signor, Marcy Heisler Klavier, Gitarre, E-Gitarre Erwachsene Alternative, Alternative Pop/Rock, Volksmusik, Broadway, Pop Rock
Out Of The Blue Bryan Ferry, Andrew Lippa, Guy Chambers, Debbie Gibson, Miles Davis, Hubert Bath Klarinette, Klavier, Gitarre, Altsaxophon, Tenorsaxophon, Flöte Boogie Woogie, Bühne & Leinwand, Alternative Rock, Jazz, Punk
Original Of The Species Klavier, Gitarre, E-Gitarre Pop, Dance-Pop, Erwachsene Alternative, Pop Rock, Alternative Pop/Rock
Orchid Yanni, Eric Sanicola, Eric John Sanicola, Steven Kudlo Klavier, Gitarre Pop, New Age, Erwachsene Alternative, Volksmusik
Opportunity William Gluck, Jason Robert Brown, The Music, Juan Villodre, Yeah Yeah Yeahs, Charles Strouse Klavier, Gitarre, E-Gitarre Indie Pop, Bühne & Leinwand, Musical, Kinder, Pop
Overdue Matthew Bellamy, Billy Mann Gitarre, Klavier Progressive Rock, Alternative Rock, Erwachsene Alternative, Pop, Alternative Pop/Rock
