What is 4 non blondes what's up?

"4 Non Blondes" was an American rock band formed in San Francisco in 1989. The primary members of the band included Linda Perry (vocals, guitar), Shaunna Hall (guitar), Christa Hillhouse (bass), and Wanda Day (drums).

"What's Up?" is a song by the band and was released in 1993 as the lead single from their debut album "Bigger, Better, Faster, More!". The song became a hit and reached No. 1 in several countries. It is often considered as the band's biggest hit and has been covered by several artists since then.

The band disbanded in 1994 after the release of their second album "Dear Mr. President". Linda Perry went on to pursue a successful solo career and is also known for her songwriting and producing work for other artists such as Pink and Christina Aguilera.