No performance in church for romantic piece (8)
I believe the answer is:
nocturne
'romantic piece' is the definition.
(romantic piece of music)
'no performance in church' is the wordplay.
'performance' becomes 'turn' (turn is a kind of performance).
'in' indicates putting letters inside.
'church' becomes 'ce' (abbreviation for Church of England).
'turn' inserted into 'ce' is 'cturne'.
'no'+'cturne'='NOCTURNE'
'for' acts as a link.
(Other definitions for nocturne that I've seen before include "Chopin piece" , "Pensive piano piece" , "I take a dim view" , "Musical item" , "Pensive lyrical piece of music" .)