Music circle? (4)
I believe the answer is:
band
This could be a double definition.
'music' is the first definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'circle?' is the second definition.
('band' can be a synonym of 'circle')
Can you help me to learn more?
(Other definitions for band that I've seen before include "Ring or musical group (4)" , "A collection of musicians in ring" , "Group; frequency range" , "Players" , "Music ensemble" .)