Xbox Offline Xbox Live Downloadable Content [DLC] Installers

What is actually in the Dead or Alive Ultimate DLC? I can find no other information about this DLC's existence apart from this pack. And the pack details nor content of the DLC reveal what this DLC is. Anybody know?
Where was this DLC gotten from?

PS: Thank you for this massive DLC effort, much appreciated!

 

Dead or Alive Ultimate 1 and 2 does not have DLC, it has a game update/title update.
It allows you to see the player ranking while spectating a match, fixes some offline bugs including a tag story mode bug. Thanks to PontonFSD for the detailed info.

 

Thank you! This might be good info to add to the initial post so that others may see it.

 

I can add it to an Update info.txt into the installer.

 

New installer with all Kraoke Revolution DLC added to the first page.These 6 packs are included in the Karaoke Revolution Party megapack previously released, but it's still nice to have another game complete.