Saw a demonstration video of this several years ago but can't find it. they had it on display in a museum and it was a self-playing instrument, I wanna say it was similar to an accordion? but maybe something else
Saw a demonstration video of this several years ago but can't find it. they had it on display in a museum and it was a self-playing instrument, I wanna say it was similar to an accordion? but maybe something else
Book of Ingenious Devices by the Banū Mūsā brothers