Common performed at Chicago’s Mamby on the Beach festival and during his set, the Chicago native brought out another local hero, Chance the Rapper. Together, the two played “The Food,” a Kanye-produced single from Common’s 2006 album Be. Atop the album’s prominent soul sample, Chance delivered a fast-paced freestyle about feeling like an outsider in the city’s libraries. Earlier this week, Chance appeared on a new track from his frequent collaborator Peter Cottontale and recently delivered the commencement speech at Dillard University’s graduation. Watch his performance with Common below.