| | - One Direction
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| - One Dove
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| - Orchestra and Chorus of The Royal Opera House Covent Garden, Richard Bonynge
- Operatica
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- Orchestre de l'Opera de Paris, Pierre Boulez
- The Organ
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- Oslo 13
- Otomo Yoshihide, Bill Laswell, Yoshigaki Yasuhiro
- On Watership Down
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- Okay
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- Ono Loco & Lil Toro
- Oz
- Old Hundred
- The Original Sinners
- Ole ohne Kohle
- Officer!
- Odd Nordstoga
- O.C. & PF CUTTIN
- Ortel
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