The Ticket Master

Twilight receives two tickets from Princess Celestia to the Grand Galloping Gala, which leads to an argument among her friends who all want to go, each with their own personal reasons. As if things could not get any more complicated for Twilight to make a choice, she notices them doing her favors to get on her good graces. To make matters even worse, the population of Ponyville learn of the spare ticket as well.
My Little Pony; Friendship is Magic - Season 1, Song #2: "Pinkie's Gala Fantasy Song"
My Little Pony; Friendship is Magic - Season 1, Song #3: "The Ticket Song"