If you're curious, I understand it can be an okay introduction into the field of music recommending. It as about as easy to read as such patents can be, since I wasn't smart enough to do any work near as complex as the stuff you machine learning folks do these days. A friend of mine called it "toothpick AI" back in the day (it issued in 1995.) Have a look here:
https://patents.google.com/patent/US5749081A
Here's my own website about the patent and the adventure. Someday I need to add something there, about how I could do anything as dumb as let Microsoft be the owner of it. It's a long story, which I could elaborate on if anyone is interested. Anyway:
https://www.whiteis.com/patents-overview
I would always enjoy discussing it with anyone, get in touch!