Creator and composer Giorgio Sancristoforo has posted a complete hands-on demo and tutorial for his invention Compusynth.

If you’re just joining us, here’s the breakdown of that app and why it’s cool. It’s available for macOS now, with Windows due next month.

And here’s the tool in the hands of its creator:

Giorgio tells us he really did devise a complete step sequencer (and a drum machine of sorts) on the original Altair 8800. It’s fascinating just revisiting this unique computer, which had a seminal role in establishing the PC world as we know it, even though it’s generally unknown in the popular imagination.

Oh yeah, about that Microsoft history:

Possibly useful in your bunker in a few years: