San Francisco was blessed with a very special performance a couple of nights ago as A$AP Rocky brought out Lil B to perform “Like A Martian.” The show, which was part of Rocky and Tyler The Creator’s joint tour, supported by Vince Staples and Danny Brown, had another special moment which was caught on video—A$AP Rocky freestyling over Tyler’s incredible, menacing “Yonkers” beat.

Referencing Lil B and San Francisco, Rocky drops what sounds like a true freestyle to close out his set—check that out above and remind yourself of the brilliant original track and video below.

Related: R.I.P. Wolf Haley: Coming to Terms With Tyler The Creator’s Adulthood