Chicago rapper Towkio, of the Save Money crew, is readying his new mixtape .Wav Theory. It's out April 28 and will feature Chance the Rapper, Vic Mensa, Chance's Social Experiment collaborator Donnie Trumpet, production from Kaytranada, and more. (Find the tracklist below.) Check out the single "Heaven Only Knows", which features Chance, Lido, and Eryn Allen Kane.

Chance the Rapper is headlining this year's Pitchfork Music Festival in Chicago.

.Wav Theory:

01 .Wav Theory

02 Clean Up [ft. Chance the Rapper]

03 Free Your Mind [ft. Donnie Trumpet]

04 I Know You

05 God In Me [ft. Leather Corduroys]

06 Rotation

07 Addicted (interlude)

08 Reflection

09 Break You Off

10 Involved [ft. Vic Mensa]

11 RN

12 Heaven Only Knows [ft. Chance the Rapper, Lido, and Eryn Allen Kane]

13 Oscillate

Watch the video for "Free Your Mind" featuring Donnie Trumpet: