Part of my album for Luna called Lunar Rising. It showcases the phases of time she, and others, had to endure, and the state of mind that she has resorted to.

This one in particular is for her slow descent into becoming Nightmare Moon, corrupting herself to the point where she was unrecognizable.
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http://eqbeats.org/track/6062
Download: http://eqbeats.org/track/6062/mp3