Liberal Dictionary English Dictionary
adverb, adjective Music.
- without instrumental accompaniment.
- in the style of church or chapel music.
adjective, adverb
- music without instrumental accompaniment
see a cappella.
Choral singing performed without instruments. The expression means “in chapel style” in Italian. Centuries ago, religious music composed for use in chapels — which, unlike large churches, had no organs — was usually for voices only.
Cappella Bardi in Santa Maria Novella – Wikidata
Cappella Colleoni – Wikipedia