Here's Part 2 of what should've been sang:
*Twilight, Applejack, Rainbow, Fluttershy, and Pinkie are now in chains in front of Blueblood*
*Blueblood levitates a sword up and points it and Twilight and her friends*
: You are about to enter a world of pain with which you are not-FamiliaAAAAAAR! *Vases, windows, and the case surrounding the crystal that showed the 3D map of the Crystal Empire from the Season 3 two parter break*
*Celestia, Luna, Cadance, Discord, Chrysalis, and Sombra stop laughing*
Here's what should've been sang.
:Tis I! Tis I! In my regal glory! Rarity, my love, at last you shall be mine! I'm strong and brave, and dashing my way to the throne! With speed! With might! With a soft and bouncy mane! *flips mane* Through the blistering desert... *destroys a statue of Celestia and Luna*