Player - in fact, organist (5)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
actor
'player' is the definition.
(I've seen this before)
'in fact organist' is the wordplay.
'in' says the answer is hidden in the clue.
'ACTOR' is hidden within 'fact organist'.
(Other definitions for actor that I've seen before include "Thesp" , "Films/stage worker" , "Player - performer" , "Thespian, stage performer" , "Theatrical player" .)