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