I am working on a music recommendation algorithm for your self hosted music. Think of it like your personal pandora.

Backend is already working: Boldaric https://github.com/line72/boldaric

And a simple iOS native front end (which I haven’t submitted to the App Store yet). Tor Jolan https://github.com/line72/torjolan

It has been interesting tweaking the algorithms and models for various similarity searches.

I really like that it focuses on music characteristics and not metadata, so popularity of a song/artist isn’t even taken into account. This has really helped me explore my rather large music collection especially when I get stuck in a rut of listening to the same things.