Outfit with matching elements in musical group (8)
I believe the answer is:
ensemble
This could be a double definition.
'outfit with matching elements' is the first definition.
'ensemble' can be an answer for 'outfit' (I've seen this before). I'm not sure about the 'with matching elements' bit.
'musical group' is the second definition.
(ensemble is a kind of musical group)
'in' is the link.
Can you help me to learn more?
(Other definitions for ensemble that I've seen before include "Performing group" , "Small group or complete costume" , "supporting cast" , "Group of players; whole outfit" , "Complete outfit - group of musicians" .)