Note from singer on the radio (6)
I believe the answer is:
tenner
'note' is the definition.
(a tenner is a 10 pound note)
'singer on the radio' is the wordplay.
'singer' becomes 'tenor' (tenor is a kind of singer).
'on the radio' shows a homophone (sound like).
'tenor' is a homophone of 'TENNER'.
'from' acts as a link.
(Other definitions for tenner that I've seen before include "Note - sounds like singer" , "Ten pound note (colloq.)" , "Bank note" , "Monetary note" , "Two fivers" .)