See what music looks like in three dimensions

This video explains how 19th century French physicist Jules Antoine Lissajous used tuning forks to map out two-dimensional shapes, called Lissajous curves, that uniquely correspond to every musical interval, the difference in pitch between two notes.
Musician Reuben Levine notes:

'What I find fascinating about this chart is that some element of the character of each interval seems to come through in these visualizations.

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