–Special #4, Part 1, December 12, 2018 – In Part 1 of “Musical Family Tree: Deep Purple,” a special and extended Prog-Scure episode, hear material by Deep Purple and related artists, including Billy Cobham, Black Sabbath, Captain Beyond, Colosseum II, David Coverdale, Dixie Dregs, Gillan, Hughes/Thrall, Ian Gillan, Ian Gillan Band, James Gang, Joe Lynn Turner, Kansas, The Michael Schenker Group, Moxy, Paice Ashton Lord, Rainbow, Tommy Bolin, Trapeze, Warhorse, Whitesnake, and Yngwie Malmsteen’s Rising Force.