Tribute bands covering progressive rock artists. Other musical acts covering progressive rock artists. Progressive rock artists covering other types of music. Artists for this episode include: Martin Turner/Geoff Downes, Fleesh, Keith Emerson, Seven Virgins & A Mule, Artists Of Magna Carta, Ray Manzarek/Catherine Aks/Michael Riesman, Steve Howe, Marco Lo Muscio, Wendy Carlos, Robert Berry/Jordan Rudess/Marc Bonilla, Gerard, Trans-Siberian Orchestra, The Now, Jordan Rudess, and Billy Sherwood/Rick Wakeman.