There also is a random button on the Music-Map that jumps to a random band:

https://www.music-map.com/info

From running the music discovery websites Gnoosic and the Music-Map for years now, and doing a lot of experiments, my experience is that the chance of someone liking a truly randomly selected band is very low. Less than 10%. But hey, trying 20 random bands and finding one interesting one can be worth it.