Dilla samples Herbie Hancock, who used the Sennheiser vocoder to improve his voice, of all things, and clone himself into a chorus of Herbots. The Sennheiser VSM-201 vocoder was also used by DARPA, the Jet Propulsions Lab in Pasadena (Big up Jack Parsons), and a deleted alien abduction scene from Cheech & Chong's Next Movie.