Producer: DJ Toomp
Album: King
Label: Grand Hustle, Atlantic

"What You Know" is an outstanding example of interpolating and replaying samples to give a track a modern sound while retaining a strong melody. DJ Toomp took a Roberta Flack cover of an Impressions song (from when Curtis Mayfield was a member), added some Donny Hathaway, and threw it all into a keyboard with a stuttering drum machine, resulting in a powerful soundtrack for T.I.'s declarations of superiority, earning them a Grammy and a couple of million sales in the process.