While I find the idea of imposing strict technological constraints on making music a compelling one, I’ve never thought to venture very far into the vast, amateur swamps of chip music. But for a certain cohort of boys who grew up in the 80’s, these sounds fondly recall many many frustrating and happy hours.
And here’s an older video of a guy playing the theme to “The Legend of Zelda” on a theremin. I really the minimal, otherworldly vibe:
And lastly, here’s another dude playing the theme to “Super Mario Bros.” on a classical guitar. There are a million of these on youtube, but this is probably the best: