I found this
http://www.famitsu.com/news/201106/30045963.html
I don't know what it means, but it talks about C9 (a new videogame called [Continent of the Ninth]) and aparently Anna will participate with a collaboration song with Yoko Kanno? "菅野よう子×土屋アンナの異色コラボ"
I post this because if you guys understand what means this... Google Translate is useless xD
-EDIT-
So I understand Anna is collaborating with Yoko Kanno for the theme song of this videogame?
http://gadget.itmedia.co.jp/gg/artic...0/news089.html