Set in an alternate version of the Ponyville we're familiar with, Cupcakes: The Musical blends elements of our favorite horror story with the musical fun of Sweeney Todd: The Demon Barber of Fleet Street. Here's the story:
This musical tells the story of Pinkamena Diane Pie, alias Pinkie Pie, who returns to Ponyville after 15 years' exile to the Everfree Forest on false charges. When she learns from her former landlady Rarity that her best friend has died, due the actions of the friendship-hungry Judge Twilight Sparkle (who's bought the "loyalty" of Rainbow Dash), she vows revenge in the best ways she knows: through baking and singing!

Credit goes to Stephen Sondheim and Hugh Wheeler for the 1979 musical from which the music is drawn and Sergeant Sprinkles for the story from which this draws inspiration.

CAST (Original - New)
Sweeney Todd/Benjamin Barker - Pinkie Pie/Pinkamena Diane Pie
Mrs. Nellie Lovett - Rarity
Anthony Hope - Applejack
Johanna Barker - Fluttershy
Judge Turpin - Twilight Sparkle
Tobias Ragg - Spike
Beadle Bamford - Rainbow Dash
Lucy Barker - Ditzy Doo
Adolfo Pirelli - The Great and Powerful Trixie! :D
Ghost Soprano - Octavia
Ghost Alto - Cheerilee
Ghost Tenor - Doctor Whooves
Ghost Bass - Big Macintosh
Beggar Woman - Derpy Hooves

Lyra Heartstrings, transformation specialist and social worker for those who believe they were not born ponies. These are her therapy sessions, both in group and in private.

With a little gentle guidance, these lost souls can rediscover the joys of being a pony, and let go of their foolish ideas. What sorts of trauma would drive anypony to throw away their identity?