a cappella singing

English Thesaurus

1. singing without instrumental accompaniment (noun.act)

hypernym	:	singing, vocalizing,
definition	:	the act of singing vocal music (noun.act)

domain member category	:	gospel, gospel singing,
definition	:	folk music consisting of a genre of a cappella music originating with Black slaves in the United States and featuring call and response; influential on the development of other genres of popular music (especially soul) (noun.communication)