Operation Dinner Out Silvestro Sabatelli Violoncelo, Trompa, Flauta, Fagote, Viola, Oboé Ópera, Palco & Tela
Opus 59 - I spy classically John Trie Bateria, Baixo, Guitarra, Órgão, Piano Palco & Tela, Jazz, Rock, Folclore Mundo e País, Pop
On The Sunny Side Of The Street Diego Monteiro, Frankie Laine, Dorothy Fields, Frank Sinatra, Dizzy Gillespie, Nat King Cole Piano, Guitarra, Órgão, Teclado eletrônico, Trombone, Trompete Country, Pop, Clássica, Folclore, Jazz
Op.2 No.1 for string orchestra Stephen Lines Violino, Violoncelo, Contrabaixo, Baixo, Viola Folclore Mundo e País, Clássica, Palco & Tela
Opus #17 Dustin O'Halloran, Frankie Valli, Denny Randell, Sandy Linzer, John Trie, The Four Seasons Piano, Guitarra Palco & Tela, Pop Rock, Trilha sonora, Folclore, Nova Era
Orange Coloured Sky Deke Sharon, Nat King Cole, Milton Delugg, Peggy Lee, Willie Stein Piano, Saxofone Alto, Guitarra Pop Tradicional, Alternativa, Jazz, Blues, Palco & Tela
Organ Grinder's Swing Mitchell Parish, Irving Mills, Will Hudson Órgão, Piano Jazz, Palco & Tela, Swing
Ordinary Barenaked Ladies, Bart Hendrickson, Patrick Monahan, Train, Pat Monahan Guitarra, Piano, Guitarra elétrica Alternativa Adulta, Palco & Tela, Pop Rock, Rock, Trilha sonora
I Exalt Thee / Open the Eyes of My Heart Mark Hayes, Larry Shackley, Deborah Brady, Ken Medema, Stephen DeCesare, Paul Baloche Guitarra, Piano, Violino, Flauta, Violoncelo, Ukulele Pop, Palco & Tela, Pop Rock, Gospel, Rock
Operation Ouch Dobs Vye, Jose Ignacio Huante Ceron, Jess Charles Piano Rock, Ópera, Infantil, Palco & Tela, Pop
Orphan Girl / Travelin' Man Chris Miller Piano, Guitarra Rock, Teatro, Musical, Pop Tradicional, Palco & Tela
Oscail an Doras Bill Whelan, John Ivor Holland Piano Folclore Mundo e País, Palco & Tela, Folclore, Musical, Broadway
One Track Mind Eric Clapton, Craig Carnelia, The Knickerbockers, Marvin Hamlisch, Keith Colley, Kevin Colley Piano, Guitarra, Guitarra elétrica Blues Rock, Jazz, Palco & Tela, Boogie Woogie, Pop
