Lots of other cool Spotify-scraping projects by the author at the bottom.
"Subgenres are McDonald's business. By going over listener data and identifying patterns, McDonald and his co-workers can identify clusters of artists who might coalesce into a genre—something he’s been doing since his earliest days at the music-intelligence company The Echo Nest, which Spotify bought in 2014. Today, his work with Spotify's data helps listeners discover artists that may have been hiding in plain sight. McDonald’s “data alchemy” helps populate the Fans Also Like sections of Spotify's artist pages, as well as Daily Mix; it also provides a real-time chronicle of how music is developing and splintering into different styles."
[0] https://artists.spotify.com/blog/trap-queen-and-the-data-sci...
Edit: so out of curiosity I looked at the bottom right corner and found "tanci". Odd name. Clicked on it, and it's Chinese spoken word artists. Incidentally I practice Chinese so it's perfect.
IIRC, there are 14 dimensions in total, but it’s impossible to represent all of them on a page. So he went for up-down, left-right, clusters, and colors to represent a subset of them.
Source: used to work at Spotify.