4 Non Blondes was an American rock band formed in San Francisco in the late 1980s, best known for their prominence in the early 1990s alternative rock scene. Their music blended elements of alternative rock, pop rock and folk-rock, often featuring strong, raspy lead vocals, acoustic and electric guitar-driven arrangements, and melodic songwriting with socially conscious and introspective lyrics. The group achieved mainstream recognition with the 1993 hit single "What's Up?" and their sole major-label album, which showcased a mix of anthemic choruses and more subdued, singer-songwriter moments. Their brief period of commercial activity and distinctive vocal style left a lasting association with early 1990s alternative radio.