Tis from her point of view.

I really like the words this time at least...
I would LOVE feedback PLEASE
You don't know the power, of jealousy...
When your sister's talents are heard at the highest intensity.
I never meant to hurt you, never thought I'd try,
But the words my sister held over me, made Luna a disguise.
I beg for your forgiveness, I'm not truly Nightmare Moon,
Spent an eternity in the dark, harmony brought me back to you.
My subjects, I swear to you, the sun will always rise,
Just remember the moon is there, to keep you in the light.
My heart is filled with regret, from becoming a pain to you.
I'll right the wrongs the darker mare, spent time making true.
Celestia's now by my side to keep me whom I am,
No longer filled by spiteful thoughts, but a princess to save the land...
http://soundcloud.com/songofaeire/im-not-a-nightmare