Give vent to a song (3)

I believe the answer is:

air

I believe this clue is a double definition.

'give vent to' is the first definition.
(I've seen this in another clue)

'a song' is the second definition.
(air can mean a piece of music)

(Other definitions for air that I've seen before include "Carriage" , "character" , "'Tune, melody (3)'" , "Ventilate with oxygen" , "Tune or aura" .)

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

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