Dec 13, 2014 These dudes just gave 12 great mixtapes in a year, so much quality content. Demetrius is probably the most slept on rap artist out right now. Here are just a few highlights from the 12 mixtapes, and also the first single from their upcoming album, Knocking on Raps door. (Debo spazzes 4th verse, starting at 6:22) All of these songs and many many more great ones were released all in this past year.