You can now play with Spotify’s recommendation algorithm in your browser

Engineer Ari Vaniderstine tweeted a link to a Glitch project called Nelson this morning, which is a browser application that lets Spotify users fiddle with various inputs in the recommendation API and make their own algorithmically generated playlists.
If you have a Spotify premium account, you can select a mix of genres from a long list that includes, for some reason, “pop-movie” but not rap, and then dictate the other parameters of the playlist with the sliders provided for nine o