Crossword Genius

Pretentious tunes? (4)

Ross

I believe the answer is:

airs

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'tunes?' is the definition.
(air can mean a piece of music)

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for airs that I've seen before include "Ventilates, say grievance" , "songs" , "Broadcasts" , "- - and graces" , "Strain's" .)

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