In the twentieth century, jazz professionals became race representatives who also played an important part in shaping the religious landscape of twentieth-century African American Protestantism. They wielded the power to both define their religious communities and craft novel religious voices and performances. These music celebrities released religious recordings and put on religious concerts, and they became integral to the artistry of African American religious expression. This book argues that with the emergence of new representatives in jazz, religious authority for African Americans found a place and spokespeople in popular culture beyond traditional Afro-Protestant institutions and religious life. It examines jazz musicians’ expressions of belief, practice, and unconventional positions of religious authority. It demonstrates that these jazz professionals enacted theological beliefs and religious practices that echoed, contested with, and diverged from the predominant African American religious culture. The lives and work of Cab Calloway, Duke Ellington, Ella Fitzgerald, and Mary Lou Williams anchor this book’s narrative of racial and religious representations as well as of religious beliefs and practices in the middle decades of the twentieth century. Through these African American jazz women and men, this book illuminates the significant Afro-Protestant cultural presence that informed, surrounded, and opposed their professional and personal lives while also contributing significantly to their artistry. This book’s focus on jazz musicians offers a novel rethinking of African American religious history by bringing the significant artistic dimensions of Afro-Protestant religion into focus as it impacted black popular culture in the twentieth century.