Mystery Song Solved!

Go Daniel Ingram!  Apparently that Twilight Sparkle plush actually sings an extended version of FiM introduction.

Now someone go bug Hasbro into releasing it so we can remix it into....

•  8 bit
• Eurobeat
• 16 bit
• Death metal
• Techno
• Trixie Autotune Singing
• Mario Paint
• Orchestral

Charge!

Also the Twilight Sparkle plushie is actually purple, she just turned pink in the video! 

Thanks to Flutterguy for the heads up!