Oath Rebbeca Gomez, Cher Lloyd, Becky G, Ammar Malik, Lukasz Gottwald, Dan Omelio Guitar, Piano Dance-pop, Folk, Pop, Pop Rock, Teen Pop
No Strings Attached Bradley Daymond, Brad Daymond, Jc Chasez, Alex Greggs Guitar, Piano Pop, Teen Pop
Obvious Benj Pasek, Travis Barker, Ariana Grande, Andreas Carlsson, Carl Falk, Travis Landon Barker Guitar, Piano, Clarinet, Tenor, Tenor Saxophone, Trumpet Broadway, Dance-pop, Stage & Screen, Folk, Rock
Oh Cecilia Amund Bjorklund, Amund Bjoerklund, Bradley Simpson, Tristan Evans, Keinan Abdi Warsame, James McVey Guitar, Piano, Electric guitar Pop Rock, Pop, Folk Rock, Folk, Teen Pop
Oh No What You Got Timothy Mosley, Justin Timberlake, Timothy Z. Mosley Piano, Guitar Teen Pop, Dance-pop, Adult Contemporary, Pop
Old Blue Jeans Michael Bradford, Hannah Montana, Pam Sheyne, Miley Cyrus, Pamela Sheyne Piano, Guitar, Electric guitar Stage & Screen, Soundtrack, Folk, Pop, Pop Rock
Olivia John Henry Ryan, Greg Mallett, Julian Bunetta, Christian Blaha, Harry Styles, Julian C Bunetta Guitar, Piano Folk, Pop, Teen Pop
Off The Chain Devrim Karaoglu, Selena Gomez, Antonina Armato, Timothy Price, The Scene Piano, Guitar, Electric guitar Pop, Teen Pop, Folk
Oh Aaron Brian Kierulf, Andy Goldmark, Joshua Schwartz, Aaron Carter Piano, Guitar Hip Hop, Dance-pop, Teen Pop, Pop
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
Olive And An Arrow Nicholas Jonas, Nick Jonas, Elvis Presley Electric guitar, Guitar, Piano Teen Pop, Pop, Folk, Pop Rock
One Of The Boys Dolly Parton, John Kander, Fred Ebb, Katy Perry Piano, Guitar Pop, Stage & Screen, Broadway, Rock, Folk
One Day At A Time Joseph Jonas, Jonas Brothers, Daniel O'Donnell, Jeremy Camp, Kevin Jonas II, Nancy Barry Piano, Ukulele, Guitar, Electric guitar Country, Blues, Easy Listening, Contemporary Christian, Stage & Screen
One Shot Kenneth Karlin, Carl Raven, Alan Silvestri, Michael Warren, Sam Fettig, Sean Hurley Piano, Guitar, Saxophone, Alto Saxophone, Viola Folk, Pop, Pop Rock, Easy Listening, Teen Pop
One Step At A Time Mich Hansen, Allison Taylor, Robert Nevil, American Idol, Jordin Sparks, Jonas Jeberg Electric guitar, Guitar, Piano Pop, Dance-pop, Pop Rock, Teen Pop, Folk
One Time James Bunton, Corron Cole, Corron Ty Kee Cole, Christopher Tricky Stewart, Justin Bieber, Tricky Stewart Electric guitar, Guitar, Piano, Ukulele Pop Rock, Contemporary R&B, Folk, Rock, Dance-pop
One Thing One Direction, Savan Cotecha, Daryl McKenzie, Dylan Thomas, Alicia Keys, Rami Yacoub Guitar, Saxophone, Piano, Bass, Double Bass, Electric guitar Pop, alternative, Rock, Pop Rock, Contemporary Christian
One Less Lonely Girl Balewa Muhammad, Bale'wa Muhammed, Ezekiel Lewis, Hyuk Shin, Justin Bieber, Sean Hamilton Guitar, Ukulele, Piano Teen Pop, Dance-pop, Rhythm & Blues, Pop, Contemporary R&B
