Ringing woman by piano first - that's not nice (11)

I believe the answer is:

unappealing

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'ringing' is the definition.
Both the answer and definition are adjectives. Maybe there's a link between them I don't understand?

'woman by piano first that's not nice' is the wordplay.
'woman' becomes 'una'.
'by' is a charade indicator (letters next to each other).
'piano first' becomes 'p' (pst letter of 'piano').
'that's not nice' becomes 'pealing' (I can't explain this - if you can you should give a lot more credence to this answer).
'una'+'p'+'pealing'='UNAPPEALING'

Can you help me to learn more?

(Another definition for unappealing that I've seen is " Not attractive".)

I've seen this clue in The Daily Express.

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