Invigorating new tune? (5,3)

I believe the answer is:

fresh air

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'invigorating' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'new tune?' is the wordplay.
'new' becomes 'fresh' (similar in meaning).
'tune?' becomes 'air' (air can mean a piece of music).
'fresh'+'air'='FRESH AIR'

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(Other definitions for fresh air that I've seen before include "that's found outside" , "Type of fiend" .)

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

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