This story is a sequel to The Best Night Ever

Final Arc - The Black Wedding
CH63 - If I Had a Heart
- The ponies of the Fourth Tribe are ascendant. Shining Armor hunts down his changeling "daughters," and even Lady Antimony won't get in his way. Meanwhile, high above the burning city of Canterlot, a long awaited reunion occurs, and Twilight confronts Alpha Brass and makes a final decision.

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It began with a mare from Ponyville and a time-looping Prince from Canterlot. This most unlikely union now stands at a crossroads: a ruthless changeling invasion; a conspiracy within the highest circles of the Equestrian aristocracy; a half dozen power hungry noblemares looking to become a Princess in all but name. With the prize of Canterlot and its Platinum Crown at stake, it falls to six Elements of Harmony to once again save not just Ponyville, but all of Equestria.

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TVtropes page is here: link

The prequel to TPC, "The Best Night Ever" is here. link
The side-story crossover with "Sweetie Belle Chronicles" is here. link

Someone out there made a playlist for Platinum Crown: Rarity, Blueblood and Chrysalis. Pretty sweet!
Wish I knew who, or even when they did it, though. I especially like the Chrysy playlist.
https://8tracks.com/explore/this_platinum_crown/hot/1

I've gotten some cool TPC related art done, too.
So Sweet and Tasty's TPC Cover Art
link
Thanks to Madmax for these two:
Rarity, Blueblood and Antimony
link
Dash and Ritterkreuz
link
The Terre Rare Founder - Lady Arsenic
link
Twilight and Alpha Brass Battle Duet
link

When Rarity is overwhelmed with making designs for an agriculture exhibition, she turns to Applejack for advice. But when she gives Applejack a hair style treatment in return, the apple farmer lets her accent slip from southern drawl to sophisticated Manehattenite. The result? More fancy parties than you can shake a candy apple at!

This story is a sequel to The Sisters Doo

Twilight Sparkle is a scientific pony. She understands things when they are explained.

Pinkie Pie is... uh... not a scientific pony. And she can't explain anything.

But there are secrets in the Wabe that Twilight needs to know, and only Pinkie has the answers.

A side-story to "The Sisters Doo".

Daring Do seeks a favor from her sister in Ponyville. Due to buried grudges, things quickly get out of hoof. She soon finds herself on her most perilous mission yet... with her biggest fan in the world. In the midst of truth and lies, loyalty and treachery, love and hate, one thing is clear ― some family situations are stranger than fiction.

The story extends in Through the Looking-glass and What Pinkie Found There and The Daughter Doo: Honorary Cutie Mark Crusader.

Many thanks to Honey Mead and statoose for their watchful and helpful pre-reading.

Ckat_Myla and statoose (CatNStat) have started an excellent reading of TSD.

When Metropony city falls under attack, who is there to save her?

That's right! Harpflank and Sweets are back, in the never-before seen lost episodes from their iconic first season!

The not-lost episodes: http://www.fimfiction.net/story/7621/Harpflank-and-Sweets

From the Canterlot Vaults comes newly found and remastered episodes of everypony's favorite dynamic duo. Experience the action all over again as Luna's forces close in on the helpless citizens of Metropony with only Harpflank and Sweets standing in Her way! Watch as these classic stories come to you in all their Rainbow-Ray glory!

Filling in Season 1 episodes with permission from Arcainum.

The bustling city of Metropony is under siege by Luna and her villainous assistant Trixie's army of deadly Lunatrons! Can Lyra and Bon Bon's crimefighting prowess and vast supply of heavy munitions keep the city safe for yet another week? Find out in this exciting episode of... HARPFLANK AND SWEETS. Warning: Not suitable for under-5s or those of an unawesome disposition.

- Now with added side-story, by supersheep64! - Harpflank and Sweets: The Lost Episodes
- Now with more added side-story, by RTStephens! - Haprflank and Sweets: Season 1
- Now with further more added parody, by Cold in Gardez! - Harpflank and Sweets: A Very Special Episode
- Now with extra further more added parody monstrosity, by Blueshift! - Sweetflank and Harps
- Now with extra TVTropes!
- Featured on EqD, rated 6-Star, for what it's worth!
- Exclamation marks!

Rainbow Dash seems to be losing her mind, forgetting entire encounters and continually saying things that don't make any sense. Scootaloo gets to see Dash twice as much as she'd ever expected. Twilight Sparkle slips into full on-hermit mode. Applejack just wants answers... and to be with Rainbow Dash.

There's a double rainbow. What does it mean? It's so bright, so vivid....

It's funny how a random whim can turn out to cause the most profound encounters in a person's life. By attempting a bit of magic, I was able to get the once in a lifetime chance to talk with actual royalty! Only, royalty from another world...

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.