Most unexcited about ditty (4)

I believe the answer is:

tune

'ditty' is the definition.
(I've seen this in another clue)

'most unexcited about' is the wordplay.
'about' indicates the answer is hidden within the clue (the clue goes around or about the answer).
'TUNE' is hidden within 'most unexcited'.

(Other definitions for tune that I've seen before include "'He who pays the piper calls the ...'" , "strain" , "Melody; adjust (engine)" , "Improve quality" , "Optimise the condition of" .)

I've seen this clue in The Mirror.

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