For music connoisseurs like me, the biggest invention is how You Tube makes mixes based on what you listen to. The same songs and songs with the same beat, prominent chords, etc..... I actually saved a few mixes that I didn't make myself because they were that good.
To me, music puts a vibe in whatever space you're listening to it in. So when an AI type program can put a vibe in my car, for instance, that is just as good or better then what I would have done, I take notice.