And the truth is finally REVEALED!!!
[Image via Kylie Jenner/Instagram.]
This guy can do ANYTHING!
The Tony-nominated actor wowed the crowd by killing a few classic Broadway solo numbers, then mixed things up by rapping Weird Al Yankovic's Amish Paradise!! Ch-ch-check out Groff's hip-hop debut performance (above)!
If you're slightly obsessed with Jon too, we have a treat for you!