The amazing Vi Hart (daughter of our Math Monday columnist George Hart) strikes again with this over 12 minute video explaining the math, science, and art behind sound. In many of Vi’s videos, she talks really fast, and it’s a style that works for her, but for something this info-dense, with lots of visual aids, it’s worth going through a few times to absorb everything. She’s always entertaining enough to make it worth your while; her illustrations are wonderful and her seemingly effortless creativity is truly inspiring.

As a bonus track, here’s Vi singin’ those “Low-Frequency Blues.” Sing it, sister!