Poke and Tone of Trackmasters held the keys to the late-'90s hip-hop crossover moment. "I'll Be", for Foxy Brown, takes an '80s R&B classic and flips it into a glossy pop-rap anthem. In Will Smith's "Miami", Trackmasters transform a post-disco bop from The Whispers into an irrepressible sunbeam of rap. As for the duo's work with Nas, consider his thoughtful noir "Street Dreams", which retools the Eurythmics smash with licks from disco diva Linda Clifford.