bye-bye-spotify
Mirror your Spotify library into a database you own, then cancel your subscription.
A copy you own
Your tracks, albums, playlists and artists are read once and written into a database on this server.
A worklist, not a wishlist
Mark each thing not started, searching or done, and record where you got it and what it cost.
Outlives the subscription
Nothing on a page you use reads from Spotify. Cancel the account and the library still opens.