Writer of notes who overdid the hearty bit? (5)
I believe the answer is:
verdi
'writer of notes' is the definition.
The definition suggests a singular noun which matches the answer.
'overdid the hearty bit?' is the wordplay.
'bit?' says the answer is hidden in the clue (I've seen 'bit' mean this).
'VERDI' is hidden in the letters of 'overdid hearty'.
'who' acts as a link.
Can you help me to learn more?
(Other definitions for verdi that I've seen before include "Diver became a strange composer" , "note writer" , "Composer of the operas Macbeth, Falstaff" , "Nabucco composer" , "Italian composer (Aida)" .)