I'm enjoying it a lot too, I've always been a bit frustrated by what you describe with Spotify. It's like it's keying more on genre than sound, which has both pros and cons, but ends up giving me a lot of music that is nominally in the same genre but missing the qualities I like about a certain song.

Probably my favorite song of all time is Close to the Edge, by Yes. Spotify will happily provide me with tons of recommendations for 70s prog - much of which I love too, but some of it leaves me cold.

Maroofy came up with "Good Day" by Leigh Ashford, a song I had never heard of. It's very interesting to compare it to CttE - it's not a very similar song in most respects, but has a similarly prominent bouncy bassline. I like the song, and I don't think I'd have found it via spotify or any of my other usual music discovery sources.

Overall this is very cool, great project.