I assumed you were talking about the one I know, as shown in the following video. One of their best song is sweet box. They are western, but seems quite familiar with oriental culture. In the CD which I bought are two songs relating to Japan, which is called `sayonara` and another one has a word `ramen` which means noodle in Japanese.
I bought their `sweet box`CD.
http://www.youtube.com/watch?v=VTo9yG8Tvl8&feature=PlayList&p=FD0A1EBFD03E1CE9&playnext=1&playnext_from=PL&index=18