Kendrick Lamar is, at the moment, the general-consensus greatest young rapper in the universe, which Jay-Z is the general-consensus best old rap man left standing. When those two guys link up with each other, it’s a big deal. And that’s why it’s worth clicking on the video below, even though it’s an insanely irritating way to experience a new song. DJing at Austin’s FADER Fort yesterday, the regular Jay recording engineer Young Guru played a clip of the remix, yelling over it the whole time and cutting it off after a couple of minutes. But it’s enough to get across that these two guys are both rapping new verses, over a rejiggered beat, and overhauling one of last year’s most iconic rap songs. Check it out, via fan-made video, below.

Kendrick’s Good Kid, m.A.A.d. City is, of course, out now on TDE/Interscope.