Crossword Genius

A look back at operatic music (4)

Ross

I believe the answer is:

aria

I'm a little stuck... Click here to teach me more about this clue!

'operatic music' is the definition.
'aria' can be an answer for 'music' (aria is a kind of music). I'm unsure of the 'operatic' bit.

'a look back' is the wordplay.
'look' becomes 'air' (I've seen this before).
'back' says the letters should be written in reverse.
'air' back-to-front is 'ria'.
'a'+'ria'='ARIA'

'at' is the link.

Can you help me to learn more?

(Other definitions for aria that I've seen before include "Operatic tune" , "Type of song" , "Musical performance" , "Repeated strain" , "Operatic air" .)

I've seen this clue in the Evening Standard.
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