Original Dixieland One-Step Jack Teagarden, J. Russel Robinson, George Crandall, D.J. LaRocca, J. Russell Robinson, Robert Rawlins Banjo, Guitarra, Piano Folclore, Jazz
Orphan Girl Gillian Welch, Emmylou Harris, Emily Crocker Guitarra, Piano Country, Rock, Boogie Woogie, Pop, País Alternativo
Orpheus Franz Liszt, Franz Schubert, Heinrich Poos, Jacques Offenbach, Sara Bareilles, Tim Wheeler Viola, Violoncelo, Violino, Órgão, Piano, Guitarra Pop Rock, Rock, Alternativa, Alternativa Adulta, Indie
O Pilgrim Come Steve Green, Douglas Kaine McKelvey, Douglas McKelvey, Wes King Piano, Guitarra Cristão contemporâneo, Folclore, Pop, Gospel
Ordinary Miracles Marilyn Bergman, Alan Bergman, Barbra Streisand, Kirby Shaw, Marvin Hamlisch Guitarra, Piano Pop, Folclore, Adulto Contemporâneo, Palco & Tela, Pop Tradicional
Open Goals Leo Noncentelli, Ian Broudie, Arthur Neville, George Porter, The Lightning Seeds, Zigaboo Modeliste Guitarra, Piano Folclore, Pop Rock, Rock, Pop
Os patinadores Sérgio Matias da Cunha, Emil Waldteufel, Emile Waldteufel Piano Folclore Mundo e País, Romântico, Infantil, Folclore
Our Failed Love Story Rick Moose, Richard Mousseau Baixo, Guitarra, Guitarra elétrica, Bateria, Viola Folclore, Country, Pop
Only Superstition Chris Martin, Guy Berryman, Jonny Buckland, Jon Buckland, Will Champion, Coldplay Guitarra, Piano Pop Rock, Pop/Rock Alternativo, Folclore, Alternativa Adulta, Rock
Only The Good Die Young Daryl McKenzie, Billy Joel, Bojana Jovanovic Violoncelo, Viola, Guitarra, Ukulele, Piano, Violino Pop, Rock, punk, Folclore, Palco & Tela
Only The Hands Eddie Carswell, Newsong, Oliver Wells, Steven Curtis Chapman Guitarra, Piano Cristão contemporâneo, Gospel, Pop, Folclore
Only When I Lose Myself Depeche Mode, Martin Gore Piano, Guitarra Folclore, Pop/Rock Alternativo, Pop, Rock, Synth-pop
Only You Know And I Know Eric Clapton, Dave Mason Guitarra, Guitarra elétrica Blues Rock, Rock Clássico, Folclore, Pop Rock, Rock
On Springfield Mountain Vicki Tucker Courtney, Traditional American Song Piano, Soprano, Baixo, Viola Folclore, Canção folclórica, Americana
