Countertenor from Deal (town) (4)
I believe the answer is:
alto
'countertenor' is the definition.
(synonyms)
'from deal town' is the wordplay.
'from' indicates a hidden word.
'ALTO' is hidden in the letters of 'deal town'.
(Other definitions for alto that I've seen before include "Low female singing voice" , "Unisex vocal range" , "One who sings" , "Member of choir" , "Lowest female singing voice" .)