Just a few weeks after revealing Chance The Rapper's fairly surprising new project with notorious rapper Lil' B, the collaborative duo debuted their six-track mixtape Free (Based Freestyles Mixtape).

The new effort comes just a few months after Chance The Rapper debuted his excellent Acid Rap follow-up Surf as part of Donnie Trumpet and The Social Experiment, but per Lil' B's ultra-prolific nature it's not terribly surprising on his end. The news was formally released via Chance's Instagram, which says, "It's called #Free and yes it's real. Conceived from magic, love, acid and bases. We made this the moment we met."

Check out the whole project below and head to Lil' B's Twitter for a free download.