Music, to create atmosphere (3)

I believe the answer is:

air

I believe this clue is a double definition.

'music' is the first definition.
(air is a kind of music)

'atmosphere' is the second definition.
(synonyms)

'to create' is the link.

(Other definitions for air that I've seen before include "Ventilate, say grievance" , "Broadcast; mien" , "Sky" , "what emerges from singer's lungs?" , "Demeanour" .)

I've seen this clue in the Evening Standard.

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