Questions about endgame room and music [SPOILER]

The last room in the game is the one past the stargate. It's the otherworldly room with low gravity, a purple cratered landscape in the background, octopus imagery and a large pyramid with an owl statue and floating "eye" at the top. Jumping into the eye triggers one of the endgame sequences. The map cannot be accessed while in this room.

1. Does this room have a name? How does the FEZ community typically refer to this room?

2. Where can I find the music that plays in this room? It doesn't seem to be included in the official soundtrack.