Johann Nepomuk Maelzel

Johann Nepomuk Maelzel (or Mälzel; August 15, 1772 – July 21, 1838) was a German inventor, engineer, and showman, best known for manufacturing a metronome and several music-playing automatons, and displaying a fraudulent chess machine. He worked with Beethoven to compose a piece of music for one of his inventions.

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