"Vocal bands" typically refer to groups of musicians who primarily use their voices as instruments. However, there are several synonyms that can be used to describe them. "A cappella group" is one of the most commonly used terms for vocal bands, which highlights their lack of instrumental accompaniment. Other alternatives include "vocal ensemble," "vocal harmony group," or simply "singers." "Voices-only group" or "vocal quartet/trio/duo" are more specific synonyms depending on the number of members. These terms can be used interchangeably based on the context and style of the music, but they all refer to the same type of musical group.