Chicago rapper Towkio, of the Save Money crew, just dropped his new mixtape .Wav Theory. It includes "Heaven Only Knows", his collaboration with Chance the Rapper, along with team-ups with Vic Mensa and Chance's Social Experiment collaborator Donnie Trumpet, as well as production from Chance, Kaytranda, and the artist himself. Listen to the mixtape in its entirety below, and check out the full credits.

He also shared an accompanying visual of the title track, which is composed of some stunning fast-lapse scenery of his native Chicago. Check that out below, too.

Don't forget - Chance the Rapper is headlining this year's Pitchfork Music Festival in Chicago.