It's springtime in Equestria and Twilight Sparkle and Princess Celestia find themselves out of sorts despite the gorgeous weather. Luna and Rarity both think they know the reason behind their moodiness and set out to make sure that true love blossoms - but will an unfortunate misunderstanding keep the two star-crossed lovers apart forever?

Illustration courtesy of nightmaremoonluna, adapted from a sketch by bri-sta.

We all wear a mask called composure, beneath which hides a heart that twists with guilt and hidden feelings. Regal as she is, Princess Celestia is no exception. What might be revealed should circumstances cause this mask to slip - or break?

Set several years after the potential conclusion to the series.

Not all assumptions are malicious, but even the most innocent rumours can be unpleasant, if they actually effect ponies' lives. Rainbow Dash knows this all too well as she tries to confront the stallion of her dreams. A bitter-sweet kind of hilarity ensues when she meets another pony with similar problems.
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After Big Macintosh helps the Mane Six out of a jam, he finds his ordinary life of
peaceful routine thoroughly disrupted by the various misadventures those crazy
ponies always seem to get themselves into.

Artwork provided by the talented Zemious

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

"It's called 'Shh'," said Fluttershy. "It's a game about who can be quiet the longest. Sound fun? I'm the world champion."

Fluttershy is not a pony who makes things up. She really is the world champion of "Shh," or The Quiet Game. And now it's time for her to defend her crown, with Twilight Sparkle and Rarity along for the ride.

What started as a normal friendly visit ends up taking two ponies on a trip down memory lane that leads them both to realize their friendship began even before Rainbow Dash's first sonic rainboom.

One by one, Twilight and her friends must come to terms with the consequences of being the Elements of Harmony.

These stories take place in the intervening time between Season One and Season Two,
with the exception of Ditzy Doo: Muffins, which takes place early in Season One.

The series continues in the sequel, Secrets and Lies.

Pony Psychology has a TV Tropes Page.