Q5 was an American hard rock/heavy metal band, formed in Seattle, Washington, in 1983 by guitarist Floyd Rose . Joining Floyd Rose in Q5 were Jonathan K.(vocals), Rick Pierce (guitar), Evan Sheeley (bass) and Gary Thompson (drums). They released two albums : Steel The Light (1984) and When The Mirror Cracks (1986) before disbanded in 1987.

Source: http://www.playityet.com/artists/q5/about