Once-a-Year Day Dave Ebersole, adler, Richard Adler, Jerry Ross Guitarra, Piano, Quarteto Barbershop Musical, Teatro, Trilha sonora, Broadway, Palco & Tela
Once More I Can See Jack Murphy, Richard Walters, Frank Wildhorn, Theodore Hicks Guitarra, Piano, Refrão, Coral TTB Broadway, Musical, Palco & Tela, Pop, Folclore
Once Upon Another Time David Cullen, Andrew Lloyd Webber, Sara Bareilles, Glenn Slater, Eric O'Reilly Guitarra, Piano Palco & Tela, Musical, Pop/Rock Alternativo, Clássica, Broadway
Once You Lose Your Heart Noel Gay, Jan-Ake Westin Piano, Guitarra, Coral da SSA, Refrão Musical, Musical ou Espetáculo, Folclore, Palco & Tela, Broadway
Once We Were Kings Lee Hall, Chris Lawry, Elton John Piano, Guitarra, Refrão, Coral SATB Musical, Folclore, Musical ou Espetáculo, Broadway, Palco & Tela
One Day I'll Fly Away Spence Bundy, Randy Crawford, Richard John, Joe Sample, Nicole Kidman, Will Jennings Piano, Guitarra, Flauta, Clarinete, Saxofone Alto, Saxofone Palco & Tela, Balada, Smooth Jazz, Musical ou Espetáculo, Broadway
Once Upon A December Stephen Flaherty, Mark Brymer, Liz Callaway, Sherry Lewis, Audrey Snyder, Lynn Ahrens Piano, Violino, Baixo, Soprano, Tenor, Guitarra Musical, Alternativa, Broadway, Infantil, Balada
Once Upon A Time...Storybook Love Harpist Elizabeth Louise, Marc Donatelle, Sherry Lewis, Mark Knopfler Piano, Fagote, Flauta, Clarinete, Oboé, Trompa Pop, Palco & Tela, Trilha sonora, Rock, Musical
One Alone Joan Frey Boytim, Otto Harbach, Sigmund Romberg, Carol Richards, Oscar Hammerstein II Piano, Guitarra Musical, Broadway, Palco & Tela, Trilha sonora
One And One Are Two Mister Rogers, Fred Rogers, Various Artists Piano, Ukulele, Órgão, Teclado eletrônico Boogie Woogie, Infantil, Musical, Palco & Tela
One Aimee Mann, Adam Clayton, Bee Gees, Mary J, Annie Roboff, Adam Lambert Refrão, Guitarra, Guitarra elétrica, Piano, Flauta, Bateria Álbuns de Rock, Broadway, Blues, Gospel, Folclore
One Last Night Blythe Pepino, Benjamin Vella, Barnabas Freeman Piano, Guitarra, Guitarra elétrica Musical, Palco & Tela, Pop, Folclore
One Day Gary Moore, Andy Miller, Beverly Darnall, Beth Redman, Marilyn Bergman, Alan Bergman Violino, Violoncelo, Baixo, Contrabaixo, Viola, Piano Blues, Musical, Rhythm & Blues, Alternativa Adulta, Gospel
