Linda Perry (born April 15, 1965) is an American rock singer-songwriter, and record producer. She first became known as the lead singer and primary songwriter of 4 Non Blondes, and has since founded two record labels, composed and produced hit songs for several other artists. They include: Christina Aguilera - who had a worldwide hit with Perry's "Beautiful"; Gwen Stefani - who had a worldwide hit with Perry's "What You Waiting For?" from her album Love. Angel. Music. Baby; Adam Lambert - "A Loaded Smile"; and Grace Slick - "Knock Me Out". Perry has also contributed heavily to albums by Courtney Love and Kelly Osbourne as well as signing and distributing James Blunt in the United States.