Musician's recital stint broadcast (12)
I believe the answer is:
clarinettist
'musician's' is the definition.
(clarinettist is a kind of musician)
'recital stint broadcast' is the wordplay.
'broadcast' is an anagram indicator.
'recital'+'stint'='recitalstint'
'recitalstint' is an anagram of 'CLARINETTIST'.
(Other definitions for clarinettist that I've seen before include "Musician, like Benny Goodman, say" , "Cats in litter (anag) -- woodwind player" .)