JOHNNY CASH AT FOLSOM PRISON explores the historical context of Johnny Cash’s seminal concert album, “Johnny Cash at Folsom Prison.” Based on writer Michael Streissguth’s acclaimed book Johnny Cash at Folsom Prison: The Making of a Masterpiece , the program weaves compelling interviews with archival photography – enhanced for broadcast by “extrapolation technique” – to evoke the spirit of that momentous day on Jan. 13, 1968 when Johnny Cash appeared on stage at Folsom Prison. Participants include: Rosanne Cash, band member Marty Stuart, and relatives of inmate/singer Glen Sherley, who famously wrote “Greystone Chapel” for Cash.