Ring for the musicians (4)
I believe the answer is:
band
I believe this is a double definition.
'ring' is the first definition.
(I know that ring can be written as band)
'the musicians' is the second definition.
(group of musicians)
'for' acts as a link.
(Other definitions for band that I've seen before include "Strip, belt; playing group" , "Pop group; stripe" , "Zone; group" , "A collection of musicians in ring" , "troop" .)