Opus One may refer to: * " Opus No. 1", a tune by Sy Oliver and Sid Garris *"

Opus Number One Music on hold (MOH) is the business practice of playing recorded music to fill the silence that would be heard by telephone callers who have been placed on hold. It is especially common in situations involving customer service. Music on hold ...

", a composition known for its use as music on hold * ''Opus 1'' (album), by Yugoslav progressive rock band Opus * Opus One Winery, United States * An alternative title for the 1971 demo versions of Mike Oldfield's 1973 album, '' Tubular Bells''

See also