Opus One
Opus One may refer to:
"Opus No. 1", a tune by Sy Oliver and Sid Garris
"Opus Number One", a composition known for its use as music on hold
Opus 1 (Opus album), 1975
Opus 1 (After Crying album), 2009
Opus One Winery, United States
An alternative title for the 1971 demo versions of Mike Oldfield's 1973 album, Tubular Bells
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