You’ve already gotten a chance to hear “Screw Driver,” a song from Prince and his new all-female band 3rd Eye Girl. While that song indulged the Purple One’s AC/DC jones, the new band recently stretched out on a 2013 remake of one of his most popular songs. This rehearsal version of “Let’s Go Crazy,” originally on the soundtrack to 1984’s Purple Rain, is night and day from the original. Gone is the uptempo track with it’s synth flourishes, replaced by a dirty, bluesy jam that sounds like Kyuss jamming with Rage Against the Machine. It even sounds like there’s a little bit of Edgar Winter’s “Frankenstein” in there. The Black Keys wish they could still do blues like this. And after listening to this and “Screw Driver,” it’s pretty awesome to see Prince embrace his status as one of the better rock guitarists out there.