As hinted by Zimmer in a podcast interview with SoundtrackNet, most of these are Zimmer's original ideas for the "At World's End" themes, before he began scoring the final cut of the third film.
As hinted by Zimmer in a podcast interview with SoundtrackNet, most of these are Zimmer's original ideas for "At World's End" new themes. These suites were written and recorded before he began scoring the final cut of the third film.