Quiet mannered couple? (4)

I believe the answer is:

pair

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'couple?' is the definition.
('pair' can be a synonym of 'couple')

'quiet mannered' is the wordplay.
'quiet' becomes 'p' (music symbol for 'piano').
'mannered' becomes 'air' (I am not sure about this - if you are sure you should believe this answer much more).
'p'+'air'='PAIR'

Can you help me to learn more?

(Other definitions for pair that I've seen before include "Cereal used as food" , "Couple - wed" , "how braces come" , "E.g. two aces; mate" , "Husband and wife" .)

I've seen this clue in the Evening Standard.

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