Art form (5)
(Other definitions for music that I've seen before include "Identical" , "Aural entertainment" , "being confined by bars?" , "Pleasing sounds" , "Organised sound" .)
(Other definitions for dance that I've seen before include "Move in time to music" , "See 4" , "social event" , "the twist, perhaps?" , "Artistic, nonverbal communication" .)
'art form' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for opera that I've seen before include "Dramatic genre" , "Carmen, perhaps" , "Musical works" , "Musical play" , "Carmen, for example" .)
(Other definitions for painting that I've seen before include "Artistic composition" , "image?" , "picture" , "Graphic art" , "Work of art" .)
'art form' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for collage that I've seen before include "Art form using glued pieces" , "work being stuck" , "Artwork from sundry stuck-on items" , "Art form using pieces stuck on" , "Assembled-fragments art" .)