Today we are talking again about things I love: a devil and a devilry!
Mr. Devil is such a person as Claude-Achille Debussy, whose Suite bergamasque I love (who doesn't go crazy for Clair de lune or Passepied?), the Arabesques, Rêverie, and then.... and then.....!
Debussy wrote his famous Children's Corner Suite (1908) for his daughter Claude-Emma, using reminiscences ranging from the Orient to Spain and America. In the finale of the Suite - Golliwogg's Cakewalk - Debussy jokes and, drawing inspiration from jazz and ragtime, mocks Richard Wagner, imitating the opening bars of the prelude to "Tristan und Isolde".
In 1913 he recorded the Cakewalk using a devilry (at those times!).
The devilry was a piano roll, that is, a roll for the piano.
Music was recorded using special pianos in which, when the performer pressed a key, a hole was punched into a paper roll, in a position depending on the key and with a length depending on the duration of the note. There were also other pieces of information written on the roll, but let's not complicate things!
Once a piano roll was produced, it was possible to duplicate it industrially and buyers could listen to music.
In fact, the roll was mounted on special pianos equipped with the so-called "tracker bar", a chamber powered by an air pump, in which there were tubes, each of which operated a key. By sliding the roll over the tracker bar, the holes allowed air to pass into the corresponding tubes, thereby operating the keyboard.
As you can see, the piano roll is the mechanical precursor to MIDI music, which is reproduced using digital electronics. In fact, as with MIDI, only the action (key press, duration, etc.) is recorded and not the sound, which is produced by the playback device.
And now, enjoy Debussy.