Vocal music is a type of singing performed by one or more singers, either with instrumental accompaniment, or without instrumental accompaniment (a cappella), in which singing provides the main focus of the piece. ... Music without any non-vocal instrumental accompaniment is referred to as a cappella.
Some vocal music is done a cappella, which is music that uses just human voices with no instrumental accompaniment. Western vocal music includes types like choral music sung by groups of singers often divided by voice, and musicals and operas, in which stories are told through singing. Other types are jazz and pop.
