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Spotify re-invented the radio
(lemmy.world)
This is a most excellent place for technology news and articles.
That's funny, I'm actually working on something similar to what you're describing. Basically an app that grabs metadata from various music sites (spotify for now), and streams the music for free from youtube.
I found this open-source attempt a while ago (haven't tried it), but it seems like the maintainer wants to do closed-source stuff now :(
Spotube does exactly this, and it's FOSS IIRC