I can't even tell if Akatin is male sometimes ^^;;. Damn powerful and high voices.

I see! I personally like the voices a bit gentler (hence my favorites like Seriyu, etc.) but if you're looking for a little mood shift without changing the song meaning, Guriri's cover is pretty nice! L-lol korean utaites and their drama are never-ending. I quite like Guriri's covers of niki songs, too, so I'll be on the watch for her next week.