Psycho Circus is the eighteenth studio album by American rock band Kiss and the first and only album to involve all four original members since 1979's Dynasty. While touted as a band effort, Peter Criss only played drums on the Ace Frehley-penned track, "Into the Void", and guitarist Frehley only played on two regular album tracks, the one he wrote plus "You Wanted the Best". He also played on a bonus track called "In Your Face", penned by Simmons. All four band members, however, sang lead vocals on the album.

Dynasty is the seventh studio album by American rock band Kiss, produced by Vini Poncia and released on May 23, 1979, by Casablanca Records.