I think the entire idea is fatally flawed.

My experience is that the best music is found randomly. I like so much, I don't even know what I really like. Even what I like is always changing. I need to listen to ton of random things I don't like and I will find a small amount of gems. The absolute gold though is finding songs I didn't even know I would like.

The algorithmic version of sifting through records at a record store for a music lover is random. Random with an easy way to play the next song.

All these recommendation systems are just Satie's musique d'ameublement generators for non-music lovers. Furniture music generators, music to play during a dinner to create a background atmosphere for that activity.