Garage Band, Pro Tools, Logic, sequencers on tablets and phones—anyone can create music these days with zero programming knowledge. But Diode Milliampere shows you how it was done with MS-DOS. Yes, that command line inputting, C-drive accessing MS-DOS from 30 years ago. It turned out pretty well!
Diode writes on his Soundcloud page (where you can listen to more of his stuff):
I use Adlib Tracker II, and MS-DOS program which sequences the Yamaha OPL3 chip. My earlier music was created with Ableton Operator and there are some LSDJ songs in there.