Unfortunately, Spotify is not responsible for missing music and removals of music that used to be available. If there's an artist/album/song missing, it's because the label/legal owner doesn't want it to be on Spotify or it is not available in your country (anymore). I suggest reaching out to the label and ask why the electric six albums have been removed from the service. Read this post (point 5) for further information: https://community.spotify.com/t5/Help-Other-Partner-Devices/Music-FAQs-You-want-to-read-this-first/m... It's common that music is added and removed from time to time, even if it's an older album.