There's a blurb of text at the very bottom that explains what it is (I just found it, it wasn't obvious to me either):
> Every Noise at Once is an ongoing attempt at an algorithmically-generated, readability-adjusted scatter-plot of the musical genre-space, based on data tracked and analyzed for 5,304 genre-shaped distinctions by Spotify as of 2021-03-30. The calibration is fuzzy, but in general down is more organic, up is more mechanical and electric; left is denser and more atmospheric, right is spikier and bouncier.
> Click anything to hear an example of what it sounds like.
> Click the ยป on a genre to see a map of its artists.
> Be calmly aware that this may periodically expand, contract or combust.
EDIT: Artist map is even more interesting, see e.g.: https://everynoise.com/engenremap-russianchoir.html - it has a scatterplot of artists, genre's neighbourhood, and... I'm not sure what that dark one is. I'm guessing the neighbourhood opposite in the "genre space"?
> Every Noise at Once is an ongoing attempt at an algorithmically-generated, readability-adjusted scatter-plot of the musical genre-space, based on data tracked and analyzed for 5,304 genre-shaped distinctions by Spotify as of 2021-03-30. The calibration is fuzzy, but in general down is more organic, up is more mechanical and electric; left is denser and more atmospheric, right is spikier and bouncier.
> Click anything to hear an example of what it sounds like.
> Click the ยป on a genre to see a map of its artists.
> Be calmly aware that this may periodically expand, contract or combust.
EDIT: Artist map is even more interesting, see e.g.: https://everynoise.com/engenremap-russianchoir.html - it has a scatterplot of artists, genre's neighbourhood, and... I'm not sure what that dark one is. I'm guessing the neighbourhood opposite in the "genre space"?