What.cd was more than an archive of nearly all recorded music, both analog and digital. It had some of the best collage lists and recommendations I have ever seen. None of the child sites came even close, but some are promising.
It was truly one of the best ways to discover music because behind each recommendation was a human that were both enthralled you were interested and would tailor their recommendations to suit your tastes.
Spotify use to have humans curate their playlists and during this time is was almost as good, but since they've moved to ML models recommendations have gone to truly awful now.