It's still hugged-to-death so I can't see it, but based on responses, this looks extremely cool!

I know that monetization is a sticky topic for many people, so please don't be offended if this isn't something you're looking for, but I have a bunch of contacts in a major music streaming service's recommendation and personalization teams - if you'd like an intro to discuss this with them (either selling the idea/implementation, or using it as a resume-item for a job), drop me an email (in my about box).