This week on “The Juke Joint” broadcast Robert Barclay spins music for Dr. Martin Luther King’s 96th birthday including songs of the civil rights movement by the Staple Singers, Bob Dylan, the Neville Brothers and Pete Seeger along with gospel selections by Sam Cooke, Dorothy Love Coates, Mahalia Jackson, Sister Rosetta Tharpe, the Clara Ward Singers and the Dixie Hummingbirds.