Priest who’s soft on crime (6)
I believe the answer is:
parson
'priest' is the definition.
(I know that parson is a type of priest)
'soft on crime' is the wordplay.
'soft' becomes 'p' (musical abbreviation for 'piano').
'on' is a charade indicator (letters next to each other).
'crime' becomes 'arson' (crime of illegally starting a fire).
'p'+'arson'='PARSON'
'who's' is the link.
(Other definitions for parson that I've seen before include "One with benefice" , "A rector or vicar" , "Anglican clergyman" , "service provider" , "Rector; clergyman" .)