There's no denying that Run The Jewels have a loyal and rabid fan base that has been following them ever since the release of their first album back in 2014. However, one Chicagoan took his game to another level at this year's Lollapalooza festival.

Holding up a sign that read "Let me rap 'Legend Has It'," Killer Mike and El-P spotted young Jacob Powell in the crowd and decided to fulfill his request. Attendees parted to make room for him to get up onto the stage and, after being greeted by the two veteran emcees, Powell launched into a hype rap-along that got the crowd going in a big way.

The RTJ members looked impressed, and why not? This kid's got some rhyming chops!

Check out the video from Lollapalooza below.