Someone posted a website to HN a year ago which took a track as input and then returned you a list of similar tracks based on the sonic qualities. I tried it w

Someone posted a website to HN a year ago which took a track as input and then returned you a list of similar tracks based on the sonic qualities. I tried it with Blue in Green and it actually did supply a list of tonally, harmonically, musically similar tracks. None were as good, of course, but still it was good to get more of the same vibe.