Help musician forget Beethoven's Overture (6)
I believe the answer is:
assist
'help' is the definition.
(to assist someone is to help them)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for assist that I've seen before include "Give help" , "provide backing" , "Be helpful to" , "Pass to scorer" , "Serve" .)