Band music sent back (5)
I believe the answer is:
strap
'band' is the definition.
(both can mean a strip of material)
'music sent back' is the wordplay.
I cannot really see how this works, but
'music' could be 'tra' (I've seen this in another clue) and 'tra' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for strap that I've seen before include "Parts of a leather band" , "Leather fastener" , "Parts (anag.)" , "e.g. Belt" , "Length or loop, of leather perhaps" .)