Singer of a Walton piece (4)

I believe the answer is:

alto

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

'of a walton piece' is the wordplay.
'of' says the answer is hidden in the clue.
'ALTO' is hidden within 'walton piece'.

(Other definitions for alto that I've seen before include "Singer's hidden inside chemical toilet" , "Male singer" , "someone to sing" , "Singing voice between tenor and soprano" , "A singing voice or pitch" .)

I've seen this clue in The Globe and Mail.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.