Keyboardist Derek Sherinian guested with the band on this event. Michael Anthony guested with Hagar's Waboritas numerous times and sometimes even sang lead. He occasionally guested with other bands, and recorded an unreleased solo album in 1985. He has also guested on six studio albums by the band Mastodon. Moore has guested on several albums, including three Fates Warning albums. Eddie Jobson guested on the album, playing keyboards and electric violin. In 1977 Sancious guested on the debut album by Narada Michael Walden. The episode also guested Hollywood veteran Jackie Coogan. Dave Kilminster guested on guitar at the concerts. Joey Tempest also guested on the album. Katy has guested on many tracks, both before and during her album release campaign. He has also guested on Painkiller and Naked City recordings. She did not sing at this point; instead, singer Margaret Shanor guested on some numbers. Claypool also guested on the Ratdog sets in 2000, 2006 and 2009. He guested at a concert by Sutherland Brothers & Quiver in 1974 at Newcastle Polytechnic.