A Cappella 

The term “a cappella” is Italian for “in the style of the chapel”.   A cappella singing is a form of vocal music that is performed without accompaniment.  It typically features a group of singers, usually the same gender, singing in harmony.  It often features complex harmonies, usually of four-parts.  

A cappella has its roots in religious and folk music, but has since become popular in a variety of musical genres.   A typical example would be Barbershop Singers, however, nowdays, singers often include vocal techniques such as beatboxing, riffing and vocal percussion to add texture to their sound