For the past few years Spotify’s Discover Weekly has been the main way I discover new (to me) music. Secondarily I guess just from browsing the related artists of the ones I already listen to. Looking for other strategies inside or outside of spotify.
I made a Python script for my CS50P course that takes up to 5 different artists and makes a new playlist based on similarities. I use it for road trips, collecting artists from different people so we all have something to listen to that we might like.
It works pretty well for a cobbled together script. It’s interesting that the Spotify API has all these features that aren’t implemented very well in Spotify.
There’s an app that does something similar on Android called Groovify, so I never pursued my own app.