Bleach Unreleased Soundtrack - Welcome to Our Xcution

I could call this requested theme a lot of things. For the longest time I just called it World # 4, as it came from Diamond Dust Rebellion and that movie's OST had 2 more themes called World # 5 and World # 7. But this new name seems to be more popular even though it got used multiple times before it ever appeared in the Fullbringer arc (Grimmjows flashback, Captain Amagai Arc, Barragans flashback). Still I guess the Xcution squad deserves the thumbnail at least. Also this theme never played in full in a single episode, so it was a bit tricky to put everything heard together in a sensible sequence. I have no idea if the current order is as Sagisu intended, but if not it can be considered a suite of sorts I guess. edit: It appears Shiro Sagisu used samples for this song: See the Sun from Lissa Gerrard Beguiling Mirages from Infinite Undiscovery OST