Refusing single answer, trivial question unsettled entertainer (13)
I believe the answer is:
ventriloquist
'entertainer' is the definition.
(I know that ventriloquist is a type of music interpreter)
'refusing single answer trivial question unsettled' is the wordplay.
I cannot quite understand how this works, but
'single' could be 'i' (one) and 'i' is present in the answer.
'question' could be 'qu' (abbreviation) and 'qu' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for ventriloquist that I've seen before include "Dummy operator" , "Voice-thrower" , "Performer with dummy" .)