Picture of a night scene (8)
I believe the answer is:
nocturne
'picture of a night scene' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for nocturne that I've seen before include "Piece of dreamy music" , "Painting of night scene" , "Picture of a night scene" , "Short romantic musical composition" , "Dreamy, pensive instrumental composition" .)