Every note has a series of higher notes contained within it. this is what our harmony and scale in music has evolved from. The larger arches represent octaves and fifths. as they get smaller we hear thirds, sixths, sevenths, and seconds come out. With finer vibration comes greater dissonance. The harmonic series is said to mirror the history of western music, with the larget vibrations aligning with ancient musical harmony and finer vibrations carrying us forward in time to the dissonance of 20th century music and beyond.
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