The wonderful antonin_odin (IG) on a barrel organ. It is a mechanical instrument that reads perforated cardboard.
Holes and no-holes music encoded the same way early computers read punched cards, except this came long before, and without a single watt of electricity.
She is from a family that builds them « les orgues Odin » and handcrafted in Saint-Just Saint-Rambert.
Complaints in the era it was invented was this was “Music Slop” made by machines with no human input. Interesting…