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Like sweet bells jangled, out of tune and harsh;   Ophelia, Hamlet [III, 1], William Shakespeare   Previous blogs: A Simple Arduino Music Box Simple Arduino Music Box: Voices Simple Arduino Music Box: Chords Simple Arduino Music Box: Envelopes   Introduction   I'm discovering that, if you build a simple, programmable device to make sound, you can't stop playing with it. With each of these blogs I say to myself that it's going to be the last, and yet here I am doi ...