Old Reaper Jason Lee Newton, Ron Patton Piano, Guitar, Electric guitar Country, Pop, Rock, Stage & Screen
Old Toy Trains The Statler Brothers, Roger Miller, Travis Perry Horn, Cello, Guitar, Piano, Flute, Clarinet Folk, Stage & Screen, Jazz, Pop, Traditional Country
Oleo Bill Evans, Miles Davis, Sonny Rollins, Pat Martino, John Coltrane, Jack Grassel Guitar, Bass guitar, Bass, Trumpet, Tenor Saxophone, Alto Saxophone Blues, Folk, Hard Bop, Jazz, Pop
OK Dennis Bierbrodt, Ammar Malik, Maureen McDonald, Juergen Dohr, Guido Kramer, James Blount Piano, Guitar, Electric guitar Dance, Dance-pop, Electronic, Club/Dance, Pop
Oklahoma Fredrick Allen, Mark Brymer, Billy Gilman, Bernie Schweickart, Oscar Hammerstein II, Eugénie Rocherolle Piano, Guitar, Clarinet, Tenor Saxophone, Alto Saxophone, Trombone Musical or Show, Contemporary Country, Pop, Broadway, Musical
Old Father Thames Betsy O'Hogan, Raymond Wallace, Peter Dawson Piano, Guitar, Electric guitar Traditional Pop, Pop, Folk, Stage & Screen
Old Flame Donny Lowery, Alabama, Mac McAnally Piano, Guitar, Organ, Electronic keyboard, Electric guitar Country Pop, Folk, Pop, Country Rock, Contemporary Country
O Lover Dennis Morris, Jason Mraz Guitar, Piano, Ukulele, Electric guitar Rock, Alternative Rock, Alternative Pop/Rock, Folk, Pop
O Master Let Me Walk With Thee David Christensen, Anli Huang, Hal H. Hopson, Robert G, Gene Roberson, James Gilbert Guitar, Piano, Organ, Violin, Flute, Chime Church, Contemporary Christian, Classical, Gospel, Pop
Olive Tree Brendan James Elliget, Diane Charlotte Lampert, Jeff Tincher, Tom Springfield Soprano Saxophone, Viola, Tenor, Soprano, Baritone, Baritone Saxophone Pop, Rock
OMG Yiva Anna Birgitta Dimberg, Han Ngoc Pham, Jin Suk Park, Hyunji Kim, Hyun Ji Kim, David Dawood Electric guitar, Guitar, Piano, Drums, Drum Set Rhythm & Blues, Folk, Dance-pop, Pop Rock, Hip Hop
O Luce Che Brilla Nell'Oscurita Nathan Pacheco Guitar, Piano Classical, New Age, Classical Pop, Pop, Folk
Omaggio Yanni, Nathan Pacheco, Martin Christoph Redel Violin, Piano, Guitar Adult Alternative, Pop, Classical, Folk, Adult Contemporary
Omen Sam Smith, James Napier, Guy Lawrence, Howard Lawrence, Liam Paul Paris Howlett, Polly Rose Olden-Chandler Baritone, Soprano Saxophone, Soprano, Alto Saxophone, Tenor Saxophone, Baritone Saxophone Club/Dance, Dance, House, Rhythm & Blues, punk
G. Puccini-Vissi d'arte & O mio babbino caro,for Oboe,Violin,Viola and Cello Giuseppe Adami, David W, Aled Jones, Alan Edgar, André Alberto Santos, Albert van Niask Cello, Piano, Viola, Violin, Flute, Trombone Opera, Classical, Pop, Musical, Folk World & Country
O Magnify The Lord Sandi Patty, Melodie Tunney, Dick Tunney, Pepper Choplin, Maggi Dawn Piano, Guitar, Cello, Flute, Violin Gospel, Contemporary Christian, Pop, Classical
