The night air? (8)

I believe the answer is:

nocturne

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'the night air?' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Maybe there's an association between them I don't understand?

This is all the clue.

Can you help me to learn more?

(Other definitions for nocturne that I've seen before include "Dreamy instrument music" , "I take a dim view" , "Painting of night scene" , "Musical item" , "Short romantic piece of music - in the night?" .)

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

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