Crossword Genius

Music circle? (4)

Ross

I believe the answer is:

band

I'm a little stuck... Click here to teach me more about this clue!

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" .)

I've seen this clue in the Evening Standard and The Globe and Mail.
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