Super interesting to read the varying opinions on here. Seems it differs a lot for music styles and personal preferences. I tried a few songs from my favorites and while the similarities were cool to see, it didn't correlate to actually liking the song for me that well. Then again I couldn't say what makes me like a song. My best guess currently is a correlation the voice of the singer(s) for songs with lyrics but not the text in itself.

Still really excited to see updates on this, especially recommendations based on a playlist, since the big 2 (Apple Music, Spotify) haven't figured out recommendation for a all-over-the-place music taste yet.