Musician roasting when playing (8)

I believe the answer is:

organist

'musician' is the definition.
(I know that organist is a type of musician)

'roasting when playing' is the wordplay.
'when playing' indicates an anagram.
'roasting' is an anagram of 'ORGANIST'.

(Other definitions for organist that I've seen before include "Church instr. player" , "Accompanist, keyboard player" , "Cathedral musician" , "Roasting (anag)" , "One plays in church usually" .)

I've seen this clue in The Guardian.

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