Overture to start with organ? Enter one admired player (7)

I believe the answer is:

olivier

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'player' is the definition.
(I know that Olivier is a player)

I can't explain the remainder of the clue.

(Other definitions for olivier that I've seen before include "ham? Definitely not!" , "National Theatre's first artistic director, d. 1989" , "Former acting lord" , "Famous English actor" , "Sir Laurence -, English actor (Hamlet, nineteen fourty eight)" .)

I've seen this clue in The Times.

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