I once heard an interview with Run-DMC where they were kinda going off about how they weren't that much into Kool Keith. For the longest, I would scratch my head. Who could resist Keith's futuristic nerd flow? And then it hit me, once I went back to the very beginning: Most will see "Ego Trippin'" as the debut of the essential breakbeat classic "Synthetic Substitution." But the radical feel of the song distracts from the heart of the matter: They were going for Run and Co's neck!