The Big Sean fans in Chicago got a nice surprise at Lollapalooza Sunday night. 

This clip has surfaced the internet of Big Sean previewing a new song during his set featuring Travis Scott and Metro Boomin. Although, no appearance from either of the featured artists, it seems that the song was received very well by his fans in attendance. 

With Travis Scott on the hook over Metro Boomin's signature production style, it definitely sounds like it's a banger on the way.

It seems like a collaboration that should have happened before, with both Scott and Big Sean being signed to G.O.O.D Music and working with Metro Boomin in the past. Hopefully the full version off this song sees the light of day sooner rather than later. 

Watch the clip below: