After a roughly 20-year hiatus, Biedermann reformed Blind Illusion in 2009 with a new-lineup of Danny Harcourt on guitar and Robert Nystrom on drums, releasing their second studio album "Demon Master" on July 7, 2010. The album marked a very different style and sound from "The Sane Asylum", going in a more traditional Rock / Progressive / Stoner rock direction. In September 2010, the group promoted the album at the Sobrante Stroll, a street fair held every year in El Sobrante since 1991. Before reuniting Blind Illusion, Biedermann had performed earlier shows at the Sobrante Stroll as well as at the older and much larger Solano Stroll fair in Berkeley. The material Biedermann covered included a mix of Blind Illusion originals and blues rock collaborations with other local musicians.