Performer can depart after broadcast (3-6)
I believe the answer is:
tap-dancer
'performer' is the definition.
(tap dancer is a kind of performer)
'can depart after broadcast' is the wordplay.
'after' says to put letters next to each other.
'broadcast' indicates an anagram.
'can'+'depart'='candepart'
'candepart' with letters rearranged gives 'TAP-DANCER'.
(Other definitions for tap-dancer that I've seen before include "one tripping over the sink?" , "Astaire or Kelly, for example" , "Light-footed individual" .)