Pseudo-release should be used for translations or transliterations that do not appear on an actual release (even if they appear on an official site). Pseudo-releases should be linked to the original tracklist using the transl(iter)ation relationship where possible. Not all translations and transliterations are pseudo-releases.
If the release has tracks listed in multiple languages, the entry with both languages included is considered to be the official release. Entries with only one of the languages on the cover should be set to pseudo-release.