New rock producer's refreshing vocal number (7)

I believe the answer is:

volcano

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'new rock producer's refreshing vocal number' is the definition.
I can't judge whether this definition defines the answer.

'refreshing vocal number' is the wordplay.
'refreshing' indicates anagramming the letters.
'number' becomes 'no' (abbreviation for 'number').
'vocal' anagrammed gives 'volca'.
'volca'+'no'='VOLCANO'

Can you help me to learn more?

(Other definitions for volcano that I've seen before include "Mountain (could be a heavy smoker!)" , "Etna is one, and Stromboli" , "eg Mount Etna" , "Eg, Cotopaxi" , "Erupting mountain" .)

I've seen this clue in The Times.

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