4 Non Blondes were an American rock band formed in 1989. They consisted of bassist Christa Hillhouse, guitarist Shaunna Hall, drummer Wanda Day and vocalist Linda Perry. Prior to the release of their first album Cara CrashMiner, Nicola, "BAM" (Northern California Edition), page 14. September 4, 1992, and then Roger Rocha, replaced Hall on guitar, and Dawn Richardson replaced Day on drums. They hit the charts in 1993 with "What's Up", their only hit. Perry left the band in 1995 to begin a solo career, and the remaining members disbanded soon thereafter.
Bassist Christa Hillhouse and guitarist Shaunna Hall had been roommates and met drummer Wanda Day when they joined a band she was playing in. When the three left that band they started playing as a three piece but after seeing Linda Perry sing at a solo performance Hillhouse and Hall asked her to join as vocalist. According to Perry, she and Hall were at Nightbreak, a San Francisco club, and when it was mentioned the threesom
Source: http://en.wikipedia.org/wiki/4 Non Blondes