Ballad or carol
I believe the answer is:
song
This clue is a double definition.
'ballad' is the first definition.
(I've seen this before)
'carol' is the second definition.
(I've seen this in another clue)
(Other definitions for song that I've seen before include "Vocal composition" , "Musical composition with words" , "Ditty" , "Carol, for example" , "Musical rendition" .)