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.
Listenbrainz might do at least some of what you want, but I must confess I haven't made heavy enough use of it to actually vouch for it.
Personally whenever I get a craving for new music I load up either gnoosic or music-map and poke around. I think they both use the same database though, so it just depends which interface you like better.
For actually sourcing music, soulseek still exists (unsure if I'm allowed to link that here, but it's not hard to find) and has a mobile client on f-droid. It's also half decent for discovery too, since you can browse folders of people who show up in searches.
Brainz suggestions are very good & they give you an RSS feed of your scrobbles. Unfortunately the scrobble app only works while online :(
https://apt.izzysoft.de/fdroid/index/apk/org.listenbrainz.android
Expand app description
The Official ListenBrainz App
ListenBrainz keeps track of the music you listen to and provides you with insights into your listening habits.
Using our visualizations, you can use ListenBrainz to track your music listening habits and share your taste with others.
Based on your listening history we recommend music you might like, new music you missed out on from your favorite artists, and what similar users have been listening to.
When you use the ListenBrainz Android app, you need to create an account with ListenBrainz, and your listening history will be associated with this account. This data is not kept on the device but is transmitted to the ListenBrainz server. The data collected is used to improve the recommendations and is accessible to other users.