In Shout! Black Gospel Music Moments, author and Baylor University professor Robert Darden tells stories -- and plays recordings -- from the Baylor University Libraries' Black Gospel Music Restoration Project. This series will explore the distinctly African-American sound of the "Golden Age of Gospel", providing cultural snapshots that reveal the depth of a people, their community, and the influence they have had on the rest of American music. In this first episode: what's gospel?