Vocal music is a type of
music performed by one or more
singers, with or without
instrumental accompaniment (
a cappella), in which
singing provides the main focus of the piece. Music which employs singing but does not feature it prominently is generally considered instrumental music (e.g. the wordless women's choir in the final movement of
Holst's
The Planets) as is music without singing. Music without any non-vocal instrumental accompaniment is referred to as
a cappella.