Chance the Rapper

One of the most intelligent, fluid, relevant rappers of 2013 is the not-so-up-and-coming rapper, Chance the Rapper. He burst onto the rap scene with his 2nd mixtape "Acid Rap," where he is known to have been on LSD while recording about 40% of the songs. The entire mixtape is amazing. Chance's lyrics are some of the most clever lyrics I've heard since Eminem.  Some might find him to be a bit of an acquired taste, but in my opinion he is the best rapper under 24 years old, and has a very very bright future. It's always kinda cool that he was trippin on acid while recording awesome music. 

youtube.com/watch?v=QRv2_zAPrhc