What does the gospel quartet singing style of a cepella mean?

A cappella gospel quartet singing refers to a vocal performance style where singers harmonize without instrumental accompaniment. This genre emphasizes rich vocal harmonies and often features call-and-response patterns, showcasing the singers' vocal abilities and emotional expression. The focus is on blending voices to create a powerful and uplifting musical experience, often rooted in African American musical traditions. A cappella arrangements allow for creativity and improvisation, making each performance unique.