Singer vocally produces note (6)
I believe the answer is:
tenner
'note' is the definition.
(ten pound note)
'singer vocally' is the wordplay.
'singer' becomes 'tenor' (tenor is a kind of singer).
'vocally' indicates a 'sounds like' (homophone) clue.
'tenor' sounds like 'TENNER'.
'produces' is the link.
(Other definitions for tenner that I've seen before include "A 10 pound note (colloq.)" , "sounded by Peter Pears" , "Cash note" , "UK banknote" , "Ten-pound note (inf.)" .)