'Twyla Moves,' a new documentary by PBS American Masters, tells the story of the legendary choreographer and dancer, who got her start performing on subway platforms and rooftops in the 1960s. "If it was kind of level, it was fair territory," she tells Terry Gross.Kevin Whitehead reviews a newly unearthed album from Hasaan Ibn Ali.'Finding Your Roots' host Henry Louis Gates has a new book and PBS series called 'The Black Church.' Gates describes the Black church as "the cultural cauldron Black people created to combat a system designed in every way to crush their spirit." We'll talk about the bargain Gates made with Jesus when he was 12 in an attempt to save his mother's life.