Liberty's not on her Japanese wiki, but it's confirmed to exist. It's a drama tie in to a drama airing on the 5th of January called "Non-Marriage Alliance." Also, Kyuuen no Kawa will be the Japanese version of the RED CLIFF part 2 theme
If you guys like her, you should listen to more Tibetan songs. They're all beautiful. My favorite singers are Han Hong and Sitar. (I liked Alan's older songs better...they seems to be too pop-ish recently)
What I'm waiting for is more Uighur artists. I absolutely love Uighur songs. There's already plenty of famous Hmong, Tibetan and Mongolian styled singers and songs in China, but very few famous Uighur artists and new songs.