DESCRIPTION:
Time for explaining for this song, and The Fall of Equestria as well. These songs were composed as a bit of an experiment for upcoming MLP side-character theme album. If you wish to see how I made these songs, I may make a tutorial for how I did this on FL Studio. Now for some info on the story these song are trying to tell. (Also, the Oru-Originals part of the album is still work in progress and I will take suggestions for a new title for this album.)

Celestial Showdown (Euro Solstice Mix) and The Fall of Equestria (Euro Rebellion Mix) both follow the same story: How Luna became Nightmare Moon and the fight that her and Celestia's forces fought till that infamous banishment for Luna. Celestial Showdown describes the actual conflict while The Fall of Equestria explains the transformation of Luna.

NOTE: My theory contains an implied LunaXSombra relationship.

The way I see it is Luna had a positive connection to Sombra, but when he took over the Crystal Empire, Celestia saw that he was causing the Crystal Ponies misery, she and her sister needed to stop him. Now for Celestia, all she was doing was banishing a dictator, but for Luna, he was her (insert connection of choice) causing some bits of self doutb to creep into her mind; her choices, following her sister's order with out a second thought against it. Luna, in the fragile state that she's in, saw the way the ponies reacted when Celestia raised the sun and compared it to the more lackluster reactions of the ponies when she raised the moon. The ponies indifference to her causes her to snap, warping her mind into the personality that we know as Nightmare Moon. As for the Celestial Showdown, it's basically poetic irony in a sense. The only reason that Luna rebelled was that she took someone to away from her, and wanted to make Celestia feel that exact same way, which would only be able to occur if Celestia were to banish someone she was close to herself.