I want to get off spotify, but I want a way to discover new music, and be notified of new music from bands I listen to. I don't want ads, and I'm fine with piracy so long it is a relatively painless experience. Something like stremio but for music.
My dream service would be one that could recommend music based on a given song, and provide details about the artist and things. And even better version would have an API I could tap into so I could connect the service to music assistant. Hell I'll make a (mostly) locally hosted version of the spotify dj if I can.
last.fm and rateyourmusic are both good for finding new music. rym notifies you of new and upcoming releases by artists you select. neither of the services have great algorithmic recommendation, but it's very easy to fall down discovery rabbitholes. rym in particular has tons of recommendation lists made by users, and a very fine-tuneable search/filter system.