On a ferry Balagansk—Anosovo, someone had a music box for a child’s entertainment. The child had long lost any interest in it, and did not open the lead. I was curious what it sounded like. Finally, the music box fell on the floor with a frail ringing, and started playing. It played a familiar melody. My aunt, being a maiden, had such a box, it looked exactly the same—black, plastic, with flat gleaming walls; opened, it displayed several red velvet compartments.
I once took off a cover which shielded the notched cylinder, and studied the mechanism. One had to tighten the spring for the cylinder to rotate. Thin metal plates which responded with pleasant sounds to the notches disturbing them, captivated my attention. I could look at their alternating bending and straightening for a long time.
Once taken off, the cover was never glued back. I saw other music boxes of this model, only with a plexiglass cover showing the secret mechanics. That was a smart invention; it probably saved a great deal of boxes from being taken apart.