Loki sits comfortably atop a vintage Polymoog synthesizer. From aagtive on Instagram, who provides the following commentary:

Been using the Polymoog keyboard more lately. I’m finding on its’ own it’s rather limited. But the rock organ bass with the filter on can be be quite strong and effective. Also, by building an audio effect rack even the piano preset can become something quite interesting like you heard on my previous post.

Each note has its own circuit board apparently. Perhaps that’s part of the charm. I also enjoy the wobbly sounds I get when it’s first powered on and hasn’t had time to warm up yet.

https://www.instagram.com/p/CccE1ymOYHN/

I did have the opportunity to see those boards on the inside of a Polymoog recently.