Episode 188: Doyle Lawson has been mingling the holy and the down home in his blistering traditional bluegrass over a career on the road stretching back just shy of 60 years. Now at 77 he's stepping away from touring and the album cycle, leaving us with the swan song album Roundtable. In a career-spanning conversation we talk about getting hired by Jimmy Martin at age 18, about the supergroup Bluegrass Album Band, about forming and leading his band Quicksilver, and about his observations, as a conservative Christian, of efforts to diversify bluegrass music.