Hold back from the chorus (7)
I believe the answer is:
refrain
I believe this clue is a double definition.
'hold back' is the first definition.
(I've seen this before)
'the chorus' is the second definition.
(synonyms)
'from' is the link.
(Other definitions for refrain that I've seen before include "tune" , "Main part of song - do not do it" , "Forbear from chorus?" , "Don't do that - it's a song" , "Chorus; keep away (from)" .)