Not so much about feeble musical (3,10)
I believe the answer is:
les miserables
'musical' is the definition.
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for les miserables that I've seen before include "Well-known musical" , "Victor Hugo novel, Valjean its hero" , "Musical based on a Hugo novel" , "Novel, muscial and film about Jean Valjean" , "Musical from Victor Hugo" .)