Percussa micro super signal processor

NPR's Morning Edition had a story yesterday morning, now streaming online, on husband-and-wife electronic music pioneer team Louis and Bebe Barron, who birthed the score for Forbidden Planet.
Together, they created an entirely new language of experimental sound,
manipulating homemade circuitry and tape, going on to work for the
likes of Cage.

Like many of the pioneers, it's incredible to hear how groundbreaking
these sounds were — and humbling to consider given the technology
available. Can we make new sounds that are just as surprising now? Can
we reimagine what alien music sounds like?

(For electronic music innovators gone another route, Ray Kurzweil tells Nature about the future of fighting machines and war. I'll stick to music, thanks!)