Lisa Nicole Lopes, better known by her stage name Left Eye, was an American rapper and singer. She was a member of the R&B girl group TLC, alongside Tionne "T-Boz" Watkins and Rozonda "Chilli" Thomas. Besides rapping and singing on TLC recordings, Lopes was the creative force behind the group, receiving more co-writing credits than the other members. She also designed some of their outfits and the stage for their FanMail Tour and contributed to the group's image, album titles, artworks, and music videos. Through her work with TLC, Lopes won four Grammy Awards.

"U Know What's Up" is a song by American R&B singer Donell Jones. It was written by Edward "Eddie F." Ferrell, Darren Lighty, Clifton Lighty, Balewa Muhammad, Anthony Hamilton, and Veronica McKenzie for his second studio album, Where I Wanna Be (1999), while production was helmed by Ferrell and Darren Lighty for Untouchables Entertainment.