I am now also in the club of getting these emails. I also use password-manager with unique, highly-cryptic passwords, absolutely no way someone bruteforced in. But i saw in the above posts that someone stated that he or she has only bumble activated in the apps. I have it too since not a long ago and i have the suspicion now that this is somehow related to the integration with bumble.
Sorry for that other answer. The page didn't load all the messages my bad. Well I think you should contact more than a Spotify community. Did that happen to other accounts? I mean Google or others? That's serious. I don't know how helpful will be this answer. But good luck