We saw this guy opening for Beck about 20 years ago. I give you McRORIE:
https://www.youtube.com/watch?v=QP62VKCwUmA
When we saw him he was still playing 2 standard issue keytars, plus the shoes and the vest and headset like the video above. In 30 minutes he stormed through everything from ZZ Top’s La Grange to Sugar Hill Gang’s Rapper’s Delight and pulled it off completely. A true Canadian nutjob - he was hilarious and he does it all live in real time; no loops. The crowd was wild.
Looks like he’s upgraded the rig since then, but still going strong:
https://www.youtube.com/watch?v=SXJ4YUhE--0
https://www.youtube.com/watch?v=o0hwNWas9mk
I specifically didn't embed the videos because I didn't want to spoil the surprise. Enjoy.