Vibrations and how they get to your ears.
Noise for airports is a blog about culture, sound, music, and technology.
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Updated (sometimes) by Nick Seaver.

This applet analyzes MIDI files for repeated forms, and then outputs an image like the one above, linking repeated parts. The image above is a mazurka by Chopin, with a “complex, nested structure.”
There is an image gallery worth checking out just for the extremes of repetition and non-repetition: Glass and Schoenberg are in there.
(via the music of sound)