Back in the spring, Chance The Rapper debuted a short untitled snippet of a song on Sirius radio station Shade 45. He recently performed that song, which is now called “Thotty,” at Chicago’s Spark In The Park festival. What he didn’t disclose on the radio preview is that the track also features J. Cole, who came out to sing a verse on stage with Chance. You can watch video from the performance below — the audio quality is pretty bad and it’s not the whole song, but it sounds a lot more put together than what we heard previously.

And here’s the original radio rip:

[Photo by Luis Ruiz/Stereogum.]