On What You're On Busted, John Fields, Charlie Simpson, Lauren Christy, Matt Willis, James Bourne Guitar, Piano Electronic, Pop, Disc, Folk, Dance-pop
Opposites Attract George Hutchinson, Billie Myers, Oliver Leiber, Paula Abdul Guitar, Piano, Electric guitar Dance-pop, Pop, Adult Contemporary, Club/Dance, Folk
One Chance To Dance Shahid Khan, Philip Leigh, Matthew Holmes, Sam Roman, Emeli Sandé, Naughty Boy Piano, Guitar Dance-pop, Folk, Pop
One Day / Reckoning Song Ran Nir, Hadas Kleinman, Ori Winokur, Roi Peled, Yoni Sheleg Guitar, Piano Club/Dance, Alternative Pop/Rock, Dance-pop, House, alternative
Ooh Ooh Baby Kara DioGuardi, Eric Coomes, Britney Spears, Fred Nassar Piano, Guitar, Electric guitar Dance-pop, Folk, Dance, Pop, Pop Rock
Ooh Jason Sellards, Derek Gruen, Jamison Mechalie, Mary J, Scissor Sisters, Sean Combs Piano, Guitar, Electric guitar Club/Dance, Dance-pop, Folk, Disc, Hip Hop
Original Sin Andrew Charles Farriss, Elton John, Andrew Farriss, Michael Hutchence, Bill Bruford, Michael Kelland John Hutchence Piano, Guitar, Electric guitar, Soprano Saxophone, Double Bass Pop, Album Rock, College Rock, Rock, Jazz
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
On The Line Nick Jonas, Joseph Jonas, Kevin Jonas II, Christopher Norton, Demi Lovato, Nicholas Jonas Piano, Guitar, Electric guitar Pop, Folk, Classical, Pop Rock, Dance-pop
Out Of Reach Dream Theater, John Petrucci, Jonathan Shorten, Elizabeth Ragsdale, Michael Mangini, Gabrielle Piano, Violin, Alto Saxophone, Flute, Guitar, Clarinet Stage & Screen, Pop Rock, Folk, Pop, Dance-pop
Original Of The Species Guitar, Piano, Electric guitar Dance-pop, Adult Alternative, Pop, Pop Rock, Rock
Origin Of Love Nicholas Littlemore, Mika, Paul Steele Guitar, Piano Dance-pop, Dance, Pop, Folk, Pop Rock
Out Of My League Noelle Scaggs, John Meredith Wicks, James King, Michael Fitzpatrick, fitz, John Wicks Guitar, Piano Alternative Pop/Rock, Dance-pop, Folk, Pop Rock, Indie Pop
Owner Of A Lonely Heart Trevor Rabin, Chris Squire, Trevor Horn, Jon Anderson, Yes Ukulele, Guitar, Piano, Electric guitar, Bass guitar, Bass punk, Progressive Rock, Arena Rock, Album Rock, Dance-pop
Oye Mi Canto Jorge Casas, Clay Ostwald, Gloria Estefan, Clay Otwald, Cley Ostwald Piano, Guitar Rock, Adult Contemporary, Dance-pop, Latin Pop, Folk
August 31 - Out of the Woods Robert Moody, Jack Antonoff, Alan Billingsley, Jack Michael Antonoff, Nickel Creek, Taylor Swift Trumpet, Piano, Clarinet, Electric guitar, Guitar, Tenor Saxophone Stage & Screen, Dance-pop, Teen Pop, New Age, Folk
Out Of Town Girl Liam Horne, Graham Edwards, Lamar Stovall, Justin Bieber, Kenneth Coby Guitar, Piano Teen Pop, Dance-pop, Pop, Folk, Pop Rock
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
Overprotected Rami Yacoub, Britney Spears, Max Martin Guitar, Piano, Electric guitar Folk, Teen Pop, Dance, Pop, Dance-pop
Outside Adam Wiles, Dave Grohl, Ellie Goulding, Calvin Harris, Nate Mendel, Aaron Lewis Piano, Cello, Oboe, Flute, Violin, Guitar Funk, Club/Dance, Synth-pop, Dance-pop, Rock
