It took Nelly roughly four years to release Brass Knuckles. Similarly, it has been four years – going on five – since the public last heard an album, let alone a new record, from Eminem. With the exception of A-list artists like Jay-Z, 50 Cent and Kanye West, all of whom seemingly drop a new project every year, most artists simply take their sweet time when recording new material. Such is not the case, however, for DJBooth favorite Charles Hamilton, who will drop the third mixtape in the Hamiltonization Process this Tuesday. The first listen off of the DJ Skee-mixed Staff Development is Ronald McDonald, a soulful record over which Charles works his magic. After all, a brand new mixtape every two weeks is pretty showstopping.