A Day on the Mountain David C. Benner, Althea Wray, Wesley Pritchard, Ewart G. Abner Jr., The Magnificents, Florent Schmitt Pauken, Bas, Fluit, Piano, Altviool, Viool Rhythm & Blues, Evangelie, Folk Wereld en Land, Folk, Adult Alternative
Open Up Your Arms Ren Harvieu Piano, Gitaar Folk, Pop, Adult Alternative, Alternatieve Pop/Rock, Pop Rock
Ordinary Barenaked Ladies, Bart Hendrickson, Patrick Monahan, Train, Pat Monahan Gitaar, Piano, Elektrische gitaar Alternatieve Pop/Rock, Soundtrack, Rock, Folk, Adult Alternative
One Sweet World David J. Matthews, Dave Matthews Gitaar, Elektrische gitaar Folk, Pop, Pop Rock, Alternatieve Pop/Rock, Rock
Ordinary Day Vanessa Carlton, Shaina Taub, Toby Anderson Piano, Gitaar, Elektrische gitaar Adult Alternative, Rock, Easy Listening, Adult Contemporary, Pop
Orphan Girl Gillian Welch, Emmylou Harris, Emily Crocker Gitaar, Piano Blues, Pop, Alternatief land, Pop Rock, Boogie Woogie
Orpheus Franz Liszt, Franz Schubert, Heinrich Poos, Jacques Offenbach, Sara Bareilles, Tim Wheeler Altviool, Cello, Viool, Orgel, Piano, Gitaar Indie, Pop Rock, Folk, Adult Alternative, Pop
Opened Once Jeff Buckley Piano, Gitaar Adult Alternative, Pop Rock, Alternatieve Pop/Rock, Rock, Alternatieve rock
Only Superstition Chris Martin, Guy Berryman, Jonny Buckland, Jon Buckland, Will Champion, Coldplay Gitaar, Piano Britpop, Brit-Pop, Adult Alternative, Pop, Folk
Ordinary Miracle Dave Stewart, Doug Abbott, CAROLE PRIETTO, Rick Hein, Glen Ballard, Sarah McLachlan Piano, Fluit, Gitaar, Altsaxofoon, Klarinet Pop, Soundtrack, Folk, Adult Alternative, Podium & Scherm
Orinoco Flow Nicky Ryan, Celtic Woman, Sarah Cellobat Chaffee, Roma Ryan, Kirby Shaw Ukelele, Piano, Gitaar, Sopraan, Altviool, Cello Pop, Folk Wereld en Land, Adult Alternative, Celtic, Alternatief
Our Time Lily Allen, Mac Huff, Greg Kurstin, Stephen Sondheim, Lee Evans, Cathy Pate Gitaar, Piano, Altviool, Trompet, Sopraan Podium & Scherm, Klassiek, Evangelie, Pop Rock, Alternatieve Pop/Rock
Out Of Love Alessia Cara, Gregg Wattenberg, John Ondrasik, Five For Fighting, Dan Signor, Marcy Heisler Piano, Gitaar, Elektrische gitaar Alternatieve Pop/Rock, Podium & Scherm, Pop, Folk, Broadway
Out Of The Blue Bryan Ferry, Andrew Lippa, Guy Chambers, Debbie Gibson, Miles Davis, Hubert Bath Klarinet, Piano, Gitaar, Altsaxofoon, Tenorsaxofoon, Fluit Podium & Scherm, Pop Rock, Rock, Boogie Woogie, Adult Alternative
Original Of The Species Piano, Gitaar, Elektrische gitaar Adult Alternative, Dance-pop, Rock, Alternatieve Pop/Rock, Pop Rock
Orchid Yanni, Eric Sanicola, Eric John Sanicola, Steven Kudlo Piano, Gitaar Adult Alternative, Pop, Folk, New Age
Opportunity William Gluck, Jason Robert Brown, The Music, Juan Villodre, Yeah Yeah Yeahs, Charles Strouse Piano, Gitaar, Elektrische gitaar Broadway, Folk, Podium & Scherm, Kinderen, Pop
