Claude Debussy's piano piece, with scrolling score; performance and graphics by Stephen Malinowski (smalin).
YouTube's smalin says, "Just wanted to know the math behind the visual demo.
x=time, y=pitch, color=pitch class (and brighter when sounding). The colors of the color wheel are mapped to the circle of fifths, with the tonic (home key) being blue and the dominant (the fifth scale degree) being in the red (as opposed to green) direction. I think of this as being a spatial mapping more than a mathematical one, but maybe that's because I'm not much of a mathematician."
Asteeg, rak en rol! n_n
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