Drummer Gavin Harrison boasts an impressive resume. Known primarily for his playing with prog masters Porcupine Tree, Harrison has lent his astonishing skills to a diverse list of artists including Iggy Pop and Lisa Stansfield. Since 2008, he has also been a member of original prog rock group, King Krimson. In addition, Gavin Harrison's instructional books Rhythmic Designs, Rhythmic Illusions and Rhythmic Perspectives, as well as his DVDs Rhythmic Horizons and Rhythmic Visions have been hailed as essential material on complex polyrhythms and creative drumming.