Thanks a lot for this comment. I have tried countless times to delete all those tracks, and that one album, without success in nostr:nprofile1qqsdr0fnxvmn8hxyz8cwazfm8zu9yt7qmc38ll69nkvsgn8dnej4sxckxm...
Nice! It's a bit hit and miss so worth trying different clients and checking what relay they use. It could be we deleted on all relays but some relays used by Nostria.