On What You're On Busted, John Fields, Charlie Simpson, Lauren Christy, Matt Willis, James Bourne Klavier, Gitarre Elektronisch, Volksmusik, Dance-Pop, Disc, Pop
Opposites Attract George Hutchinson, Billie Myers, Oliver Leiber, Paula Abdul Klavier, Gitarre, E-Gitarre Erwachsene Contemporary-Musik, Club/Tanz, Dance-Pop, Pop, Rock
One Chance To Dance Shahid Khan, Philip Leigh, Matthew Holmes, Sam Roman, Emeli Sandé, Naughty Boy Gitarre, Klavier Dance-Pop, Pop, Volksmusik
One Day / Reckoning Song Ran Nir, Hadas Kleinman, Ori Winokur, Roi Peled, Yoni Sheleg Gitarre, Klavier Indie-Rock, Elektronisch, Haus, Alternative, Club/Tanz
Ooh Ooh Baby Kara DioGuardi, Eric Coomes, Britney Spears, Fred Nassar Gitarre, Klavier, E-Gitarre Dance-Pop, Pop Rock, Tanz, Pop, Volksmusik
Ooh Jason Sellards, Derek Gruen, Jamison Mechalie, Mary J, Scissor Sisters, Sean Combs Gitarre, Klavier, E-Gitarre Pop, Alternativer Tanz, Disc, Dance-Pop, Volksmusik
Original Sin Andrew Charles Farriss, Elton John, Andrew Farriss, Michael Hutchence, Bill Bruford, Michael Kelland John Hutchence Gitarre, E-Gitarre, Klavier, Kontrabass, Sopran-Saxophon Neue Welle, Dance-Pop, Volksmusik, Jazz, College Rock
Only Happy When It Rains Garrett Breeze, Butch Vig, Garbage, Nacio Herb Brown, Shirley Ann Manson, Doug Erickson Klavier, Gitarre, E-Gitarre Pop, Alternative Pop/Rock, Alternativer Tanz, Volksmusik, Alternative Rock
On The Line Nick Jonas, Joseph Jonas, Kevin Jonas II, Christopher Norton, Demi Lovato, Nicholas Jonas Klavier, E-Gitarre, Gitarre Klassisch, Dance-Pop, Pop Rock, Volksmusik, Teen Pop
Out Of Reach Dream Theater, John Petrucci, Jonathan Shorten, Elizabeth Ragsdale, Michael Mangini, Gabrielle Flöte, Gitarre, Klavier, Klarinette, Violine, E-Gitarre Club/Tanz, Rock, Punk, Elektronisch, Volksmusik
Original Of The Species Klavier, Gitarre, E-Gitarre Pop, Dance-Pop, Erwachsene Alternative, Pop Rock, Alternative Pop/Rock
Origin Of Love Nicholas Littlemore, Mika, Paul Steele Gitarre, Klavier Pop, Dance-Pop, Pop Rock, Tanz, Volksmusik
Out Of My League Noelle Scaggs, John Meredith Wicks, James King, Michael Fitzpatrick, fitz, John Wicks Klavier, Gitarre Pop, Volksmusik, Alternative Pop/Rock, Dance-Pop, Indie Pop
Owner Of A Lonely Heart Trevor Rabin, Chris Squire, Trevor Horn, Jon Anderson, Yes Klavier, Gitarre, E-Gitarre, Ukulele, Schlagzeug, Bassgitarre Arena Rock, Dance-Pop, Hard Rock, Album Rock, Progressive Rock
Oye Mi Canto Jorge Casas, Clay Ostwald, Gloria Estefan, Clay Otwald, Cley Ostwald Klavier, Gitarre Rock, Dance-Pop, Bühne & Leinwand, Erwachsene Contemporary-Musik, Volksmusik
August 31 - Out of the Woods Robert Moody, Jack Antonoff, Alan Billingsley, Jack Michael Antonoff, Nickel Creek, Taylor Swift Ukulele, Klavier, Gitarre, Tenor, Tenorsaxophon, E-Gitarre New Age, Bühne & Leinwand, Country Pop, Pop Rock, Pop
Out Of Town Girl Liam Horne, Graham Edwards, Lamar Stovall, Justin Bieber, Kenneth Coby Klavier, Gitarre Pop, Teen Pop, Dance-Pop, Volksmusik, Pop Rock
Over Now Dylan Wiggins, Adam Feeney, Jerry Cantrell, James Bourne, Abel Tesfaye, Calvin Harris Klavier, Gitarre, E-Gitarre Metall, Folk Welt und Land, Dance-Pop, Alternative, Rock
Overprotected Rami Yacoub, Britney Spears, Max Martin Klavier, Gitarre, E-Gitarre Tanz, Pop, Dance-Pop, Volksmusik, Teen Pop
Outside Adam Wiles, Dave Grohl, Ellie Goulding, Calvin Harris, Nate Mendel, Aaron Lewis Klavier, Gitarre, Flöte, Cello, Oboe, Violine Club/Tanz, Dance-Pop, Funk, Rhythm & Blues, Volksmusik
