"Confound these ponies, they drive me to fanfiction!"
Seriously, I'm addicted to "ponyfiction" now. 
Same here.
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This is hilarious:
Luna Dances To Nightwish (Moondance)And there's
tons of fan made music on Youtube.
My favorite: I Will Rise - Trixie's Return Theme
I Will Rise - Trixie's Return Theme. It starts out slow and mournful, then switches to a very ominous military-style march (very much like Gustave Holst's
Mars theme). It builds up to a haunting but fast paced tune with electric guitars and vowel tones sung by either a choir or soprano. It then ends with a vowel tone sung by a soprano. Note that there are supposed to be lyrics (in German)
Here they are (translated):
Low and Defeated
Humiliation,
tears in my eyes and anger in
my empty heart!
(I dream of glory and power,
Now I have nothing but hate!
Dreams of fame have made way for
Anger and Despise!) x2
I will come back stronger
and show you all who is the best!
Long gone are days of loss and,
I will embrace victory!
(No Longer!) (No Longer!)
Will I hide my face
(No Longer) (No Longer ashamed!)
No longer ashamed
(Cry: No longer! No Longer!)
I am proud and mighty
(No Longer) (No Longer ashamed!)
I am Powerful!
(Cry:)
(All victory! All Victory!)
Flow through me
(Greatest Triumph! Greatest Triumph)
greatest triumph
(Total victory shall be mine!)
I Will rise above you
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On a side note, I wonder if Trixie will be the dark version of the Element of Magic?
Trixie vs. Twilight Magic Duel please.