梶浦由記 (Yuki Kajiura):Mezame

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This song is performed by 梶浦由記 (Yuki Kajiura).梶浦由記 (Yuki Kajiura):Mezame

This song is featured in the anime 舞-HiME (My-HiME).

There is an instrumental version and a version with vocal as well...