Kirsten Rigg was the lead guitarist, and backup vocalist for Sin in Space. She began playing with Cassidy when the band was called Swarm, but the band changed names when another band with the same name got popular in San Jose. Cassidy used to play acoustic, but he went electric around the time Asteroid Band was recorded. Kirsten played with Cassidy and various members of Sin In Space, including Teague, Becca, Brendan, Greg, Sara, and Kai, from 1998 until 2005 when the band broke up. The band had a few recordings: Asteroid Band, something just called EP that was put online, and a seven inch with The Velvet Teen.