The Smithsonian Folkways website has a great podcast on the history of Folkways Records and its founder/owner Moses Asch
. While there a few howlers, such as "...SENATOR Joseph McCarthy and his HOUSE Un-American Activities Committee," it gives a clear picture of Asch, his accomplishments and faults. Mostly folk and blues, there is a lot of great music.
Of local interest is Episode 14: Music and the Winds of Change: The Civil Rights Movement
. There is a section on the Nashville Sit-Ins starting at 36:00, with period interviews with Peggy Alexander
, who took part in the protest and with Greenville Pitts, who is described as "the manager of a large department store in Nashville."