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: The Flower Kings, California Guitar Trio, Alien Planetscapes, Fleesh, Anastacia, Erik Norlander, Shadow Gallery, Colosseum, Regenesis, Seven Virgins & A Mule, Trans-Siberian Orchestra, Trent Gardner & Pat Mastrelotto, Gerard, and Keith Emerson.