A cappella choirs, or singing groups that perform without instrumental accompaniment, can be referred to by a variety of synonyms. One common term for such choirs is vocal ensembles, as they rely solely on the power and precision of their collective voices. Other synonyms for a cappella choirs include choral groups, singing societies, and vocal bands. Some choirs may also incorporate words like "unaccompanied" or "sans instruments" to emphasize their unique style of performance. Whether they are called vocal ensembles or choral groups, a cappella choirs are beloved for their seamless harmonies and ability to create complex musical arrangements using just the human voice.