Memories of a time long gone by hold the key to Luna's salvation. To save her sister, Celestia sends Twilight on a quest through Luna's mind, searching for the source of an ancient spell that is slowly killing her. What she finds may change her forever.

Twilight experiences Luna's life first hand on an emotional journey through the dark alicorn's past.

This story is a sequel to Upheaval: Breaking Point

Following the events of Breaking Point, Twilight Sparkle and her friends discover that Equestria's demise may not come from an enemy invasion, but from within. The Barrier Lands and the Heartland begin the slow and uneasy process of reuniting into a single Equestria, but this long-delayed joining is already in danger at its conception.

With Celestia's power in her grasp and her agents by her side, the wheels of Black Rose's plans for Equestria's future continue to turn. However, her brazen gamble has done more than just bring down a centuries-old barrier. Ancient powers begin to stir: the remnants of a dark period in Equestria's history, the immortal inhabitants of Celestia's homeworld, and a rising tide of darkness coming ever closer.

Young Celestia has gone into hiding in the underbelly of Equestria. Through his vile scheming, Discord has driven her out of Canterlot Castle, engineering a civil war; Luna, her mind and soul poisoned by Discord, has turned into Nightmare Moon. Sooner or later, Celestia must face what she knows is her destiny: to confront and banish her own sister, before the advent of Eternal Night.

‘Have you ever,’ she started, ‘broken a promise you made?’

Celestia and Luna live a carefree childhood at Canterlot Castle, but its end approaches far too quickly — no matter how much they struggle, they find themselves drifting apart. And without their noticing, a new evil rises that could drive a wedge between them for good...

Equestria is a land of magic and harmony, a peaceful realm ruled by immortal and benevolent monarchs. At what cost is this possible?

Following the discovery of a strange and powerful device, Twilight Sparkle is whisked away to the edges of a land she thought she knew so well. Here, surrounded by ponies whose very existences have been kept secret, she must contend with vicious enemies, hostile allies, and the truth.

Chapters 1-16 edited by KiltedKey

Twilight composes a letter to the Princess about a terrible Hearth's Warming gift.

Featured on Equestria Daily, 23 June 2012.

Rainbow Dash is specially invited to become the youngest member of the Wonderbolts, and so she moves to Cloudsdale, leaving Ponyville behind. But she stays in contact with her friends through letters. Time passes, but the letters remain a constant. One-shot.

Lyra Heartstrings, graduate of Luna's Academy of Magic, is going to have her first solo show - tonight! It's nothing major, just a few pieces for the Academy itself to play for the new student body, but with some of the most talented musicians in all of Equestria set to be there, the chances to make contacts and get her name known in the right circles is just the opportunity she's dreamed of! She just has to do a quick favor for Trixie first, and then it's off to Canterlot. Surely nothing can go wrong?

A Lunaverse story.
This story is happening simultaneously with Family Matters, but you don't have to have read Family Matters to enjoy this one.

Rated T for (non-sexual) nudity

When Octavia and Vinyl Scratch decide to combine their respective musical styles into a new genre that will celebrate not only their talent, but also their unique bond, they feel confident that they're the pioneers of the new age. So when the two find their music challenged by another pair of musicians, they set out to make sure that theirs is the best. However, the rival two aren't bad artists themselves, not to mention they’re certainly not… of the same persuasion as Vinyl and Tavi. In the snow-wrapped streets of Manehattan, can they risk exposing their new found -and still taboo- relationship, or will they be doomed to second place?

Incredible cover art by JackiePhantom13! DA: http://jackiephantom13.deviantart.com/

EQD!!
Link: http://www.equestriadaily.com/2012/04/story-mixing-relationships.html

Cheerilee wants to teach. Ditzy Doo wants her family to stop thinking she's crazy. Lyra just wants Cheerilee. During their first semester in college a sheltered rich girl, a budding engineer, and a street musician will each have to face the decisions that affects the rest of their lives. Will they be able to stay friends? A School Daze/Three Whooves standalone prequel, and the perfect place to start.

Labelled 'Crossover' for Doctor Whooves as a cast member.