Given new pitch son departs to play (10)

I believe the answer is:

transposed

'given new pitch' is the definition.
(I've seen this before)

'son departs to play' is the wordplay.
'to play' is an anagram indicator.
'son'+'departs'='sondeparts'
'sondeparts' anagrammed gives 'TRANSPOSED'.

(Another definition for transposed that I've seen is " Given new pitch".)

I've seen this clue in The Times.

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