The circle of fifths is the first thing that we learned about in Physics of Music. It is something that musicians use to help represent the relationship of the 12 notes of the chromatic scale. It shows how closely the keys are related to each other. The circle of fifths also has a basis in science and the harmonic series, because the interval from the second harmonic to the third harmonic is a fifth as well (A to E). It uses every single note in the 12-note scale once before coming full-circle. The dodecahedron was a 12 sided 3 dimensional object that we built during the second week of our class. It represents the circle of fifths and how it progresses from each note to the other.
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