A cappella community refers to groups of singers who perform without instrumental accompaniment. This musical style emphasizes vocal harmony and creativity, allowing singers to mimic instruments or create unique sounds using only their voices. A cappella groups can be found in various settings, including schools, colleges, and professional ensembles, often participating in competitions and festivals. Members of the a cappella community often share a passion for music and collaboration. They engage in arranging songs, rehearsing together, and performing for audiences. Notable examples include collegiate groups like The Sing-Off champions and professional ensembles such as Pentatonix, which have popularized the genre through recordings and live performances.