One doesn't want to sit through a whole concert? (10)
I believe the answer is:
promenader
'one doesn't want' is the definition.
The definition suggests a singular noun which matches the answer.
'sit through a whole concert?' is the wordplay.
I cannot really see how this works, but
'a' is present in the answer.
'concert?' could be 'prom' (abbreviation for promenade concert) and 'prom' is found within the answer.
The remaining letters 'ender' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'to' acts as a link.
Can you help me to learn more?
(Other definitions for promenader that I've seen before include "she saunters about" , "Walker - concert goer" , "One may join in Rule Britannia" , "Royal Albert Hall regular" .)