Consisting of Robert Fripp, Trey Gunn, Adrian Belew, and Pat Mastelotto, King Crimson embarked on a tour of Europe to promote its 2000 album The ConstruKction of Light. The limited-edition, three-disc live set Heavy ConstruKction was recorded at various points throughout that tour, and was intended to set the stage for the band's arrival in the U.S. that fall. The first two discs include a full set list encompassing both old and new Crimson compositions, and the second disc also features a bonus CD-ROM performance video. The third disc culls 14 of the group's best improvisations from the tour. Obviously, it's a set for die-hard fans only.