Hey thank you for watching the video! And for listening to the song of course. I use a programming language calledChucK. I actually wrote a blog post about it if you are interested :) But to summarize, the drums are from a Yamaha RX-5.
The synth behind the melody is a 4-operator FM synth patch mimicking a honky tonk piano, "wired" with all modulators stacking. That's part of what gives it such a weird gritty texture.