Radio broadcast by Elvis' first crew member? (6)
I believe the answer is:
roadie
'crew member?' is the definition.
(member of a musician's crew)
'radio broadcast by elvis' first' is the wordplay.
'broadcast' indicates anagramming the letters (letters scattered or cast around).
'by' means one lot of letters go next to another.
'elvis' first' becomes 'e' (1st letter of 'elvis').
'radio' anagrammed gives 'roadi'.
'roadi'+'e'='ROADIE'
(Other definitions for roadie that I've seen before include "Touring band's supporter" , "One handles equipment for travelling entertainers" , "Star's assistant" , "One on tour" , "Touring pop group's equipment handler" .)