"What's Up" is a popular song by the American band 4 Non Blondes, released in 1992. The song features themes of self-reflection and social issues, resonating with listeners through its catchy melody and powerful lyrics. It became a significant hit, reaching high positions on music charts worldwide. The song's lead vocalist, Linda Perry, wrote it during a time of personal struggle, which adds to its emotional depth. Over the years, "What's Up" has been covered and referenced in various media, solidifying its status as an anthem of the 1990s and a timeless classic.