As his co-headlining tour with Bun B pulls into Portland tonight, Kirko Bangz surprised fans with the release of a new mixtape. Titled Progression 4, the mixtape sees him unleashing new freestyles and original material over popular songs by the likes of Drake, Nipsey Hussle, Kid Ink and Rico Love. YG and Yo Gotti have guest spots on "Hoe," which was released earlier this year. Download Progression 4 below.



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