ASAP Rocky is huge in London. The Harlem rapper recorded his entire upcoming album, At.Long.Last.A$AP (which we might see in May), in the U.K. capital, and this past weekend, he took the stage at one of London's biggest clubs. Rocky was the headlining guest at legendary BBC Radio 1 DJ Benji B's debut residency night at club XOYO. The night began with sets from DJs like Kaytranada and grime MCs like Skepta, but the main star of the night was Flacko himself. And Rocky had some special surprises for the London crowd.

During his set, Rocky brought out Yasiin Bey, formerly known as Mos Def. Fans of A$AP will know that the "Pretty Flacko" nickname once belonged to Mos Def, and the rapper we now call Yasiin Bey gave young Jodye his blessing to use the nickname himself. As you can see, the two New Yorkers concocted some special chemistry in London, performing a collab that might appear on A.L.L.A. 

Watch the fan-shot video clips below.

A Mos Def feature on At.Long.Last.A$AP? Damn, we're more than ready for this album.