This is the Princess Trixie Sparkle theme song, the extended version. I have to admit this is my favorite of the PTS songs (so far ;) ) Enjoy!

Lyrics: Magpiepony
Performed by: Itsannachloem, Gloryoftherainwings, Crick, Haste Dash, Emogak, and Magpiepony
Instrumentals: "When Can I See You Again" by Owl City