Chap who loves one on the fiddle, I'm told (4)
I believe the answer is:
beau
'chap who loves one' is the definition.
'Beau' can be an answer for 'chap'. I am not certain of the rest of the definition.
'the fiddle i'm told' is the wordplay.
'the fiddle' becomes 'bow'.
'i'm told' indicates a 'sounds like' (homophone) clue.
'bow' is a homophone of 'BEAU'.
'on' is the link.
Can you help me to learn more?
(Other definitions for beau that I've seen before include "Handsome man" , "Male suitor - dandy" , "Sweetheart" , "An old-fashioned boy friend like Brummell" , "Handsome young lover" .)