I love Jeri Ellsworth.
She always comes up with the coolest hacks, and this one does not disappoint. Jeri has taken an old bass guitar and attached it, using some piezo pickups and some nifty programming, to a Commodore 64! Surely the ultimate chip-tune, electro-acoustic instrument?
The C64 bass can also act as a Keytar and various waveforms can be selected from the keyboard
Here’s an interview with Jeri at a recent Makerfaire where she explains a little about the build process.
Jeri is actually a self-taught electrical engineer and has been a huge inspiration to me for a while now. Search her name on Youtube to check out some of her podcasts and cool projects.