Singer from Carshalton (4)

I believe the answer is:

alto

'singer' is the definition.
(type of singing voice)

'from carshalton' is the wordplay.
'from' indicates the answer is hidden within the clue.
'ALTO' can be found hidden inside 'carshalton'.

(Other definitions for alto that I've seen before include "Unisex vocal range" , "Second of four parts (in singing)" , "Singer's hidden inside chemical toilet" , "Counter-tenor or contralto" , "The highest adult male singing-voice" .)

I've seen this clue in The Sun.

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