Orange Coloured Sky Deke Sharon, Nat King Cole, Milton Delugg, Peggy Lee, Willie Stein Alto Saxophone, Piano, Guitar Stage & Screen, alternative, Blues, Jazz, Traditional Pop
Open Up Your Door Julie Doubleday, Richard Hawley Guitar, Cello, Viola, Violin, Piano, Electric guitar alternative, Pop, Folk, Rock
Only Happy When It Rains Garrett Breeze, Butch Vig, Garbage, Nacio Herb Brown, Shirley Ann Manson, Doug Erickson Piano, Guitar, Electric guitar Alternative Dance, Pop, alternative, Pop Rock, Alternative Pop/Rock
Orpheus Franz Liszt, Franz Schubert, Heinrich Poos, Jacques Offenbach, Sara Bareilles, Tim Wheeler Piano, Guitar, Electric guitar, Organ, Violin, Cello Rock, Pop, Adult Alternative, Pop Rock, Folk
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
Outro Breaking Benjamin, Benjamin Burnley, Alexandr Misko, Mark J. Klepaski, Aaron C. Fincke, Aaron Fink Guitar, Electric guitar Folk, alternative, Alt-Metal, Metal, Post-Grunge
OverHeated Finneas O'Connell, Billie Eilish O'Connell, Billie Eilish, Billie O'Connell Piano, Guitar, Electric guitar Electropop, Alternative Pop/Rock, alternative, Pop, Folk
Oscillate Wildly Johnny Marr, Steven Morrissey, The Smiths Guitar, Piano, Bass guitar, Percussion, Cello, Drums Indie, Indie Pop, Rock, alternative, Britpop
Orange Crush Michael Mills, Mike Mills, Peter Buck, Bill Berry, Michael Stipe, William Berry Guitar, Piano, Bass guitar Alternative Pop/Rock, Folk, Children, Alternative Rock, Jangle-Pop
Out There Ryan Newell, Adam D J Taylor, Brian Strohmetz, Cy Coleman, Sister Hazel, Jim Dale Flugelhorn, Tuba, Bass Trombone, Cornet, Baritone, Euphonium alternative, Folk, Pop, Broadway, Stage & Screen
Fantasy and Fugue on "Over the Rainbow", op. 5 Celtic Woman, Alan Jay Lerner, Audrey Snyder, Elise Ecklund, edward shanaphy, E.Y. Harburg Piano, Ocarina, Violin, Organ, Banjo, Alto Saxophone Broadway, Traditional Pop, Celtic, Jazz, Children
Our Generation Guy Farley, Tokio Myers, Craigie Dodds Piano Pop, alternative, Folk, Indie R&B, Electronic
Outshined Chris Cornell Guitar, Electric guitar, Drum Set, Drums Metal, Grunge, alternative, Pop Rock, Alternative Pop/Rock
Over It Over Again Zooey Deschanel, HIM Piano, Guitar Adult Alternative, Alternative Pop/Rock, Folk, Indie Pop, alternative
Over Now Dylan Wiggins, Adam Feeney, Jerry Cantrell, James Bourne, Abel Tesfaye, Calvin Harris Guitar, Electric guitar, Piano Folk World & Country, Pop, Neo Soul, Electropop, Contemporary R&B
Otherside Christoph Fleischmann, Red Hot Chili Peppers, John Frusciante, Anthony Kiedis, Chad Smith, Tai Anderson Piano, Bass guitar, Guitar, Ukulele, Electric guitar, Drums Jazz, Alternative Pop/Rock, alternative, Funk Rock, Alternative Metal
Overboard Justin Bieber, Dapo Torimiro, Oladapo Torimiro, Ingrid Michaelson, Taurian Shropshire, Waynne Nugent Guitar, Piano Pop, Rock, Contemporary R&B, alternative, Dance-pop
