 blind illusion is an american progressive thrash metal band from richmond, california. formed in 1979 by lead guitarist and main songwriter marc biedermann, the band had an extremely unstable lineup (biedermann being the only constant member) and went through several stylistic changes during their time. after a 20 year hiatus, biedermann reformed blind illusion in 2009 and released the band's 2nd album, demon master. as of june 2014 they are working on new material. ==history== blind illusion was formed by-then-high-school student marc biedermann, along with many other members including keyboardist ben hevoroh and drummer bret hern. the band's earliest sound had been musically rooted as progressive rock, with biedermann citing as his main inspirations rush, king crimson and jethro tull. however, external input from later musicians - many with ties to the bay area thrash scene - would add a heavy metal direction to the band, a style porcupine tree's steven wilson described as being "in the veins of old judas priest, angel witch and early fates warning". by late 1984, the line-up consisted of marc biedermann on lead guitar, pat woods on rhythm guitar, dave godfrey on vocals, les claypool on bass and former blizzard drummer mike miner. before godfrey left in 1985 to form heathen, blind illusion had already released 2 demos. bryan kehoe was hired to fill in guitars in the studio after woods' departure from the band. during this period, blind illusion worked extensively with bands such as exodus and aftermath, playing shows throughout the 
American_progressive_metal_musical_groups Les_Claypool Musical_groups_disestablished_in_1989 Musical_groups_established_in_1979 Musical_groups_from_San_Francisco,_California Musical_trios Primus_(band) Thrash_metal_musical_groups_from_California