This is a remix/extended version of the music that Pinkie Pie plays when she wants to PAR-TAY! at the Grand Galloping Gala in S1E26 "The Best Night Ever" of My Little Pony Friendship is Magic. Honestly I don't even know what genre you'd call this! 0_o But I think somehow, it works!
Oh and as with most of my remixes, *turn up the bass!*