Oops Harry Warren, Jacob Luttrell, Missy Elliott, Charlie Puth, Johnny Mercer, Steps Ahead Guitarra, Piano, Teclado Jazz, Easy Listening, Rock, Folclore, Teen Pop
Oops! I Did It Again Max Martin, Florian Wagner, Britney Spears, Martin Sandberg, Rami Yacoub Piano, Guitarra, Clarinete, Flauta, Violino, Trompete Dança, Pop, Folclore, Teen Pop
One Man Show Joseph Jonas, Nicholas Jonas, Kevin Jonas II, Jonas Brothers, Joe Jonas, Nick Jonas Guitarra elétrica, Guitarra, Piano Pop, Teen Pop, Pop Rock
Only Thing I Ever Get for Christmas Christopher Stewart, Tricky Stewart, Aaron Pearce, Tim Miner, Justin Bieber Piano Pop, Teen Pop
On The Line Nick Jonas, Joseph Jonas, Kevin Jonas II, Christopher Norton, Demi Lovato, Nicholas Jonas Piano, Guitarra elétrica, Guitarra Folclore, Clássica, Dance-pop, Teen Pop, Pop Rock
August 31 - Out of the Woods Robert Moody, Jack Antonoff, Alan Billingsley, Jack Michael Antonoff, Nickel Creek, Taylor Swift Ukulele, Piano, Guitarra, Tenor, Saxofone Tenor, Guitarra elétrica Country Pop, Palco & Tela, Nova Era, Pop Rock, Teen Pop
Out Of Town Girl Liam Horne, Graham Edwards, Lamar Stovall, Justin Bieber, Kenneth Coby Piano, Guitarra Dance-pop, Pop, Folclore, Pop Rock, Teen Pop
Our Year Hanna Jones, Jack Kugell, Jack David Kugell, Matt Wong Piano Palco & Tela, Trilha sonora, Pop, Infantil, Teen Pop
Overprotected Rami Yacoub, Britney Spears, Max Martin Piano, Guitarra, Guitarra elétrica Dance-pop, Teen Pop, Pop, Dança, Folclore
Out Of The Old Jordan Powers, Josh Cumbee, Olivia Rodrigo Piano, Guitarra Musical, Palco & Tela, Trilha sonora, Pop, Teen Pop
Overboard Justin Bieber, Dapo Torimiro, Oladapo Torimiro, Ingrid Michaelson, Taurian Shropshire, Waynne Nugent Guitarra, Piano Alternativa, Teen Pop, Dance-pop, Folclore, Pop Rock
Over The Wall Gregory Carl Christian, Eric Peterson, Steven Souza, Alex Skolnick, Debbie Gibson, Deborah Gibson Guitarra, Piano Rock, Metal, Pop Rock, Teen Pop, Folclore
Overload Cameron McVey, Felix Howard, Keisha Buchanan, John Legend, Paul Simm, Siobhan Donaghy Guitarra, Piano, Guitarra elétrica Folclore, Dance-pop, Pop, Pop Rock, Rhythm & Blues
Our Time Is Here Jonas Brothers, Antonina Armato, Tim James, Demi Lovato Guitarra, Piano Teen Pop, Infantil, Pop Rock, Folclore, Pop
Over Again One Direction, Alexander Gowers, Ed Sheeran, Robert Conlon Guitarra, Piano Pop, Pop Rock, Dance-pop, Teen Pop, Folclore
Paranoid Jesse Vest, Geezer Butler, Avenged Sevenfold, Terence 'Geezer' Butler, Anthony Iommi, John Fields Tenor, Saxofone Soprano, Viola, Soprano, Barítono, Saxofone Barítono Jazz, Metal, Folclore, Pop, Hard Rock
Out of My Heart Christian Burns, BBMak, Anthony Griffiths, Mark Barry, Stephen McNally, Mark Berry Guitarra, Piano, Ukulele Boy Band, Teen Pop, Pop, Folclore, Pop/Rock Alternativo
Particular Taste Ryan Tedder, Shawn Mendes, Zach Skelton Piano, Guitarra, Guitarra elétrica Pop, Teen Pop, Pop Rock
Part Of Me Dr. Luke, Aaron Mason, Roger Emerson, Bonnie McKee, Max Martin, Justin Paul Guitarra, Piano, Baixo, Viola, Soprano, Tenor Teen Pop, Folclore, Musical, Broadway, Pop Rock
Over It Ruth-Anne Cunningham, Billy Steinberg, Katharine McPhee, Josh Alexander, Tori Amos Piano, Guitarra Dance-pop, Folclore, Pop, Pop Rock, Rhythm & Blues
