Priest played in band (6)
I believe the answer is:
stripe
'band' is the definition.
(I know that band can be written as stripe)
'priest played' is the wordplay.
'played' indicates anagramming the letters (letters playing around).
'priest' is an anagram of 'STRIPE'.
'in' acts as a link.
(Other definitions for stripe that I've seen before include "Sign of a soldier's rank" , "Chevron; band" , "Distinctive band" , "bar" , "Band of colour, maybe of rank" .)