A Cappella is the genre that showcases the pure, unadorned beauty of the human voice, characterized by its vocal harmonies and absence of instrumental accompaniment. Rooted in religious and folk traditions, a cappella has been popularized in modern times by groups like The King's Singers, Pentatonix, and Straight No Chaser. Its intricate arrangements and vocal techniques create a rich, full sound that captivates listeners. Today, a cappella continues to thrive, with new groups and artists exploring its potential and bringing its vocal artistry to a wide range of audiences.