In a hip-hop game glutted with amateurs, DJ JS-1 and his colleagues are consummate Profeshionals. Don't believe me? Simply hit play on the Brooklyn mainstay's latest single, and hear for yourself. From the headliner's majestically grimy boardwork (complete with a chopped sample from Mobb Deep's G.O.D Pt. III) to the guest rhymes of La Coka Nostra members Ill Bill and Slaine, all the pieces of this jam work together like parts in a well-oiled machine. Craving more? You'll find what you seek on JS-1's new It Is What It Isn't compilation album, available now from online retailers.