The sound has shifted over the generations from blues to soul to rap, but Memphis has been a constant and energetic hub for gifted and storied performers. This celebration looks at the music industry of the Mississippi Delta and its rich history, as members of the old guard and current generation pair off in performance. Mavis Staples, Otis Clay, Bobby "Blue" Bland, Booker T., Al Kapone, Lil' P-Nut, Yo Gotti, many more are featured. 95 min. Widescreen; Soundtrack: English.