http://v.youku.com/v_show/id_XNDgwMjA3NjI4.html - source of the rip on Youku
http://www.mediafire.com/?xbcq6761dbk000p - mp3 rip of the audio on MediaFire
Somehow the actual song is just... amazing even though this is just a part of it. (we heard most of the remix beforehand) Anyway, I LOVE IT and I think a lot of other fans may love it as well. I saw some translations of the lyrics from the remix and it seems she uses a sand castle metaphor for most of the song? Lyrically, this may be one of her more interesting tracks of late for most people. It sounds like a tasuku arrangement to me, but I'm not 100% sure.
Rather refreshing sounding and unlike much of what she's released before. (which is the case for a lot of the tracks lately imo) Not entirely sure what the source is though... USEN? Radio? Hope a Chinese fan can elaborate on this.