Song, popular, I adapted, in part (4)

I believe the answer is:

aria

'song' is the definition.
(aria is a kind of song)

'popular i adapted in part' is the wordplay.
'in part' indicates the answer is hidden within the clue.
'ARIA' can be found hidden inside 'popular i adapted'.

(Other definitions for aria that I've seen before include "Operatic number" , "Elaborate accompanied song for solo voice" , "Operatic solo, duet, etc" , "Operatic part" , "Summertime perhaps" .)

I've seen this clue in The Times.

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