On October 31, 1990, Phish performed at Armstrong Hall in Colorado Springs, a show notable for its energy and improvisational excellence, characteristic of the band's early career. By this time, Phish had released two studio albums: their self-titled debut "Phish" in 1989, and "Lawn Boy," released earlier in 1990. The live recording captures the band during a pivotal period when they were solidifying their reputation as a live act. Their unique blend of rock, jazz, and improvisation was beginning to attract a dedicated fanbase. Notably, the Halloween performance tradition was established around this time, leading to unique thematic shows in future years. This performance is also significant as it showcases their signature song "Foam," exemplifying their intricate compositions and tight musicianship, which would only further develop in subsequent years as they expanded their live repertoire and became known for their elaborate shows.