O Holy Night Voice and Big Band Key of D Daryl McKenzie, Adolphe-Charles Adam, Adolphe Adam, Josh Groban Big Band, Adult Contemporary, Romantic, Gospel, Pop
Oh Yes Kevin Bradshaw, Lloyd Turner, Whitney Houston, Missy Elliott Piano, Guitar Pop, Adult Contemporary, Rock
Omaggio Yanni, Nathan Pacheco, Martin Christoph Redel Violin, Piano, Guitar Adult Alternative, Pop, Classical, Folk, Adult Contemporary
O Mare E Tu Sérgio Matias da Cunha, Dulce Pontes, Andrea Bocelli, Enzo Gragnaniello Guitar, Piano Classical Pop, Pop, Folk, Adult Contemporary, Classical
On Bended Knee Boyz II Men, Robert Gay, Jimmy Jam, Douglas Nolan, Terry Lewis, James Harris III Bass, Tenor, Viola, Soprano, Cello, Guitar Gospel, New Jack Swing, Club/Dance, Adult Contemporary, Contemporary R&B
Oh Boy Liz Smith, Sunny West, Bill Tilghman, Sonny West, Norman Petty, The Crickets Guitar, Piano Pop Rock, Folk, Rock & Roll, Pop, Rockabilly
Oh Mother Christina Aguilera, Bruno Coulais, Christophe Barratier, Kara DioGuardi Piano, Guitar Pop, Dance, Adult Contemporary, Folk, Dance-pop
One And Ever Love Angela Lupino, Gareth Gates, Simon Franglen Piano, Guitar Adult Alternative, Folk, Adult Contemporary, Pop Rock, Contemporary R&B
One Belief Away Dillon O'Brian, Bonnie Raitt, Paul Brady Guitar, Piano, Electric guitar Blues Rock, Adult Contemporary, Country, Pop Rock, Pop
One Dream Mac Huff, Pierre Marchand, Sarah McLachlan Guitar, Piano, Ukulele Adult Contemporary, Adult Alternative, Pop Rock, Gospel, Pop
O Love That Will Not Let Me Go George Matheson, Amy Grant, Albert Peace, Joseph M. Martin, Albert Lister Peace, David R Viola, Bass, Tenor, Soprano, Piano, Guitar Gospel, Adult Contemporary
Ombra Mai Fu George Frederick Handel, Ahiva Editions, Andrea Bocelli, Jackie Evancho, Henry Leck, Kim Kirkman Harp, Violin, Piano, Guitar, Clarinet, Trumpet Folk, Pop, Opera, Baroque, Romantic
One Honest Heart Reba McEntire, Gary Baker, Frank Myers, David Malloy, Frank J. Myers Piano, Guitar Contemporary Country, Adult Contemporary, Country, Pop
One Last Song Tyler Sam Johnson, Charles Emanuel Smalls, James Napier, Charlie Smalls, Darren Rust, Tyler Johnson Piano, Guitar, Electric guitar Neo Soul, Adult Contemporary, Folk, Pop, Rhythm & Blues
