Crossword Genius

One not paid by unruly tune-lover (9)

Ross

I believe the answer is:

volunteer

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'one not paid' is the definition.
I can't tell whether this definition defines the answer.

'unruly tune-lover' is the wordplay.
'unruly' indicates anagramming the letters.
'tune'+'lover'='tunelover'
'tunelover' is an anagram of 'VOLUNTEER'.

'by' acts as a link.

Can you help me to learn more?

(Other definitions for volunteer that I've seen before include "Put forward, suggest" , "One enlisting of own free will" , "Without being asked" , "One works in an unpaid capacity" , "Opposite of conscript" .)

I've seen this clue in the Sydney Morning Herald.
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