Crossword Genius

Bench also option when playing (5,5)

Ross

I believe the answer is:

piano stool

'bench' is the definition.
(I know that piano stool is a type of bench)

'also option when playing' is the wordplay.
'when playing' is an anagram indicator.
'also'+'option'='alsooption'
'alsooption' is an anagram of 'PIANO STOOL'.

(Another definition for piano stool that I've seen is " Player's support".)

I've seen this clue in The Independent.
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