Wow! I was thinking about doing something similar (extracting audio features to find really similar songs) some weeks ago. I love the idea, it'd be great to have something like this to discover music too, but it'll be difficult to discover new music because it won't be present in the collection.
I buy a lot of music on Bandcamp and often a label will have their whole catalog on sale, so I’ll just buy that. But I haven’t been good exploring the new 50+ albums I just bought, so this is helping.
I also finally took my wife’s collection, properly tagged it, and added it to my collection. That has been fun to explore.
That sounds nice. Sometimes I listen to a really great fragment of a song (the final minutes of Descending from Tool) and I think: "It'd be great to hear songs that have this kind of fragment".
I don't know if that's possible or not, but it'd be much better for me than the recommendations from popular streaming services.
