Ballad, e.g (4)
I believe the answer is:
song
(Other definitions for song that I've seen before include "Musical rendition" , "Piece of music, usually with words" , "Piece of vocal music" , "Musical composition; air" , "Vocal composition" .)
I believe the answer is:
song
(Other definitions for song that I've seen before include "Musical rendition" , "Piece of music, usually with words" , "Piece of vocal music" , "Musical composition; air" , "Vocal composition" .)