Note we hear from singer (5)
I believe the answer is:
tenor
'singer' is the definition.
(tenor is a kind of singer)
'note we hear' is the wordplay.
'note' becomes 'tenner' (a tenner is a 10 pound note).
'we hear' indicates a 'sounds like' (homophone) clue.
'tenner' sounds like 'TENOR'.
'from' is the link.
(Other definitions for tenor that I've seen before include "Vocal range" , "character" , "intent" , "theme" , "Singer; drift" .)