Childish Gambino "Sour Face" (ft. Jay Rock)

Childish Gambino 'Sour Face' (ft. Jay Rock)
Childish Gambino recently dropped his long-awaited mixtape Royalty, but we've still got new material coming from the rapper.

We recently heard leftover track "Body," and now another one has surfaced from the cutting room floor.

"Sour Face" didn't make the tape's cut, but you can hear Gambino spitting alongside yet another member of Black Hippy -- adding to collaborations with Schoolboy Q and Ab-Soul -- with a guest appearance from Jay Rock.

Childish Gambino still has a few rescheduled tour dates coming, which you can check out over here. Give "Sour Face" a listen below.