Definition of a cappella in English:

a cappella

Pronunciation: /ˌa kəˈpɛlə//ˌɑː kəˈpɛlə/

adverb & adjective

  • (with reference to choral music) sung without instrumental accompaniment.

    [as adjective] ‘an a cappella Mass’
    [as adverb] ‘the consorts usually perform a cappella’

Origin

Italian, literally in chapel style.

Pronunciation:

a cappella

/ˌa kəˈpɛlə//ˌɑː kəˈpɛlə/