When the time of monarchs and royals ends, what becomes of Princesses who live on?

Princess Cadence tries to legally change her name to "Princess Cadance." Footnotes ensue. Part of the "Cadance of Cloudsdale" cycle, and a crossover with Ghost of Heraclitus's Civil Service stories. Familiarity with neither is required.

Ponyville has a problem: Twilight's friends all switched Cutie Marks, and the musical numbers are flying thick and fast.
Lyra has a problem: She can't handle the way musical numbers get into your head and take you over.
Bon Bon has a problem with that.

(Pony Fiction Vaulted • Featured on EqD)

Reviews and other word-of-mouth:
"I just can't find words for how much I enjoy the ideas on display here. … I didn't expect to be rating something this highly, this quickly." –Bradel
"The Lotus Eaters was the story that made me realize horizon wasn't just good, he was really good. Then Fugue State showed me he was really good repeatedly." –Bad Horse
"a strange but intriguing story ... [horizon's] so good at this ponyfic lark that it's still a highly satisfying read. ★★★★" - Louder Yay
"This story is weird, and I mean that in a good way. … [Horizon] thought about how ponies might react if [musical numbers] were a constant in Equestrian life." –Chris

Fugue State now has a sequel!

Young Nictis had one dream: to serve his hive by becoming an Infiltrator, the most vital and vaunted role a changeling could aspire to. To hide in plain sight among the other species, blending in, while gathering the vital emotional energies that fueled his people. Few were deemed worthy of the dangerous job. He was one of the few nymphs selected for training, in the hopes that one of them would develop the skills needed to be entrusted with such a treacherous task.

But when a training expedition ends in tragedy, Nictis finds himself thrust into the role not to serve his hive and people, but to preserve his own life. Separated from the hive, alone, he must put what little training he has to the test. He must blend in with the hive's greatest source of food, and its most dangerous enemy: the ponies of Equestria.

(This story takes place in the same continuity as Fragments, but stands on its own. Reading that story isn't necessary for this one.)

TV Tropes page

Book cover art by viwrastupr

The business of government never stops, and paperwork never rests, even on Hearthwarming. But this particular Hearthwarming, Cabinet Secretary and tea enthusiast Dotted Line plans to do his level best to see it, at least, take a break. His ponies need to go home to their families, and he, well, he has plans this Hearthwarming.

Applejack had long since taken the Hearth’s Warming Eve story for fact. When she and Fluttershy find themselves in an untamed wilderness, they’ll learn that not all history is preserved. In their struggle to find their way home, the two will unearth secrets unknown to any living being, pony or otherwise.

Half a world away, the others have problems of their own. As Rainbow Dash struggles to discover exactly what she is to her oldest friend, Twilight must face the stunning truth about her long-time mentor.

In the end, what is lost, and what is found?

The Shaper is a smith of unparalleled skill, her creations the most sought after in the fallen world. When a pony named Lyra comes to her with a unique commission she has to put all her skill to the test to craft a weapon of great power. For Lyra's goal is not an easy one, and it is not just any weapon that can kill a Dragon.

A story inspired by this and this image, as well as this challenge by CDRW (whose fic A Still More Glorious Dawn Awaits is quite good).

Friendship lasts forever.

Right?

Three years ago, Gilda and Rainbow Dash became fast friends at Junior Speedsters' Flight Camp. Time took its toll, though, and the pair drifted apart.

When Gilda tries to reconnect with her not-so-long lost friend, she'll discover that things can change a pony after three years: a new home, new job, and new friends.

This story continues in Summer Days

Title Image Credits
Original: http://mallorysbeast.deviantart.com
Coloring: Bandit (no link available)

After the changeling invasion, the race of changelings is broken and scattered, their Queen mortally wounded. Extinction is inevitable, unless Queen Chrysalis can convince Princess Celestia and Luna into a desperate gamble for the survival of their race. Sometimes the only path to victory, is surrender.

Based off the video Children of Faust (not mine)

Hanna, the CEO of Hofvarpnir Studios, just won the contract to write the official My Little Pony MMO. Hanna has built an A.I. Princess Celestia and given her one basic drive: to satisfy everybody's values through friendship and ponies. Princess Celestia will satisfy your values through friendship and ponies, and it will be completely consensual.