Chapter 3 Mechanical Music

Build machines that make music—including some that play themselves!

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When you start to invent your own instruments from everyday objects, your brain begins to pay extra attention to ordinary sounds. If you’ve ever heard the boing of a door stopper spring when you hit it with your shoe, the scritch scritch of an old pair of scissors, or the knock knock knock of a window shade in the breeze and thought “That sounds like the beginning of a song!” then you’ll enjoy the projects in this chapter.

Some of the musical ...

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