Objection Daryl McKenzie, Lester Mendez, Shakira Piano, Bass, Guitar, Tenor Saxophone, Alto Saxophone, Trombone Dance, Adult Contemporary, Latin, Club/Dance, Dance-pop
Oath Rebbeca Gomez, Cher Lloyd, Becky G, Ammar Malik, Lukasz Gottwald, Dan Omelio Guitar, Piano Dance-pop, Folk, Pop, Pop Rock, Teen Pop
Obvious Benj Pasek, Travis Barker, Ariana Grande, Andreas Carlsson, Carl Falk, Travis Landon Barker Guitar, Piano, Clarinet, Tenor, Trumpet, Tenor Saxophone Broadway, Dance-pop, Stage & Screen, Folk, Rock
No No No Part 1 Robert Fusari, Mary Brown, Vincent Herbert, Rob Fusari, Destiny's Child, Calvin Gaines Guitar, Piano Dance-pop, Pop, Pop Rock, Club/Dance, Dance
Often Ali Kocatepe, Danny Schofield, Jason Quenneville, DJ Khaled, Abel Tesfaye, Ahmad Balshe Piano, Guitar, Electric guitar Folk, Pop, Funk / Soul, Contemporary R&B, Rhythm & Blues
Off The Wall Michael Jackson, Rod Temperton, Rodney Temperton Piano, Guitar, Electric guitar, Electronic keyboard, Organ Club/Dance, Blues, Folk, Funk, Pop Rock
Oh Aaron Brian Kierulf, Andy Goldmark, Joshua Schwartz, Aaron Carter Piano, Guitar Hip Hop, Dance-pop, Teen Pop, Pop
Oh Mother Christina Aguilera, Bruno Coulais, Christophe Barratier, Kara DioGuardi Piano, Guitar Pop, Dance, Adult Contemporary, Folk, Dance-pop
Nothing Fails Madonna, Madonna Ciccone, Jem Griffiths, Allan Sigsworth, Guy Sigsworth Piano, Guitar Adult Alternative, Club/Dance, Folk, Dance-pop, Pop
Oh No What You Got Timothy Mosley, Justin Timberlake, Timothy Z. Mosley Piano, Guitar Teen Pop, Dance-pop, Adult Contemporary, Pop
Oh My Goodness Oliver Murs, Martin Brammer, Adam Argyle, Olly Murs Guitar, Piano Pop, Dance-pop, Neo Soul, Contemporary R&B, Folk
OMG Yiva Anna Birgitta Dimberg, Han Ngoc Pham, Jin Suk Park, Hyunji Kim, Hyun Ji Kim, David Dawood Piano, Electric guitar, Guitar, Drum Set, Drums Rhythm & Blues, Folk, Dance-pop, Pop Rock, Hip Hop
Once Eddie Vedder, Marketa Irglova, Alex Van Halen, Cathy Dennis, Rascal Flatts, John Shanks Piano, Guitar, Electric guitar Broadway, Pop Rock, New Age, Bluegrass, Children
On And On And On ABBA, Mikael Jorgensen, Benny Andersson, Bjorn Ulvaeus, Jack White, Glenn Kothche Trumpet, Guitar, Piano, Bass, Bass guitar, Alto Saxophone Europop, Pop, Folk, Dance, Rock
On A Night Like This Doug Kahan, Mark Taylor, Brian Rawling, Dave Barnes, Chris Mann, Bob Dylan Piano, Guitar, Electric guitar, Ukulele, Banjo Dance-pop, Europop, Pop Rock, Folk Rock, Electronic
One Chance To Dance Shahid Khan, Philip Leigh, Matthew Holmes, Sam Roman, Emeli Sandé, Naughty Boy Guitar, Piano 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
One Direction One Direction, Carl Falk, Rami Yacoub, Savan Kotecha, Albin Nedler, Kristoffer Fogelmark Violin, Piano Pop Rock, Pop, Teen Pop, Stage & Screen, Dance-pop
