Squarecave Breadboarded from Logan Williams on Vimeo.
"The Squarecave, a DIY analog synth by Logan Williams, being demoed while it is still on a breadboard. For more details, go to 47Ω.com/squarecave.html."

"The Squarecave is a hybrid digital and analog music synthesizer. It uses digital CMOS ICs to generate a sequence of oscillations of varying pitch and volume, and then pipes the result through analog filters (lo-pass, hi-pass, band-pass)."