This guy took an ancient (1980 or so) paper-tape reader from a Heathkit computer and rewired it so it would control a simple oscillator bank made with 555 timer chips. Then he made punched tapes for it, by writing a QBASIC program. I’m afraid to ask how long it took him.

Nervous Squirrel strikes again.

Cock-a-doodle-doo.

He also made something called a “mucky sailor“.

Courtesy of Make magazine: a MeeBlip synth, built into a vintage cookbook.