f(t)14 / 35Accordion dance
sin t sin(1.01t)
Two almost equal tones sounding together. They throb, louder and softer.
The equation
sin(2πft) + sin(2π(f + d)t) = 2cos(πdt) · sin(2π(f + d/2)t)
What the equation decides
The accordion's pulse. Its held notes throb instead of sustaining, and the throb doubles from section to section.
What was composed
All the melodies, chords, guitar and percussion.
Score
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