Author and film documentarian Abraham Santiago, unveils the definitive history of contemporary acappella within the confines of rhythm and blues vocal group singing. Santiago captures the spirit of the 1960s, and beyond revealing the birth of acappella as a new contemporary pop genre. With rare photos and abundant background information, Santiago pioneers a new path in vocal group singing via acappella. With an extensive discography on acappella recordings, this work will inform and educate fans and students. This work is the first comprehensive and respectful study of this musical genre.