Touring band's helper (6)
I believe the answer is:
roadie
'touring band's helper' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for roadie that I've seen before include "Equipment handler for touring band" , "Worker with band on tour" , "Person moving and setting up band's equipment" , "Musical tour crew member" , "Touring band's supporter" .)