Romantic piece: hit performance listened out for (8)
I believe the answer is:
nocturne
'romantic piece' is the definition.
(romantic piece of music)
'hit performance listened out for' is the wordplay.
I cannot quite see how this works, but
'performance' could be 'turn' (turn is a kind of performance) and 'turn' is found within the answer.
This may be the basis of clue (or it may be nonsense).
(Other definitions for nocturne that I've seen before include "Dark scene" , "Short romantic piece of music - in the night?" , "Musical item" , "Pensive piano piece" , "Dreamy musical piece" .)