A/N: Hello again, everypony, and welcome to a new installment of Twin Pony Tales! Not much to say here but Happy New Year!

Singing Writer

The train took us (meaning Twilight, her five Ponyville friends, Starlight, Sunset, Guitar, and I) straight to Canterlot, and although I noticed the gem inside of Guitar's chest, I said nothing in hopes that nopony else had noticed. The gem matched Guitar's skin tone, after all. I still was filled with worry that she was not a total unicorn anymore. No unicorn in my knowledge had any sort of gem in any part of their bodies.

We arrived in Canterlot by the middle of the day, and Twilight led us all straight to the castle, which shone in the sunlight. I was happy that I got to see such a lovely place in my lifetime. Guitar was a little quieter than the day before, but she stood with a confidence I only knew from when she would protect me from our mother. We arrived in a lovely throne room and met Princess Luna, a big white Alicorn with flowy rainbow hair that I assumed to be Princess Celestia, and a pink Alicorn with tricolored hair and a Crystal Heart with gold swirls as her Cutie Mark. She held with magic a baby Alicorn that was white and had tricolored hair like the other Alicorn.

Twilight introduced the Princesses to Guitar and I, "Guitar Riff, Singing Writer, you've already met Princess Luna. This is Princess Celestia, Princess Cadence, and her daughter Flurry Heart. Princesses, these are the ponies that I'm sure Luna has told you about: Guitar Riff and Singing Writer."

"Forgive me for saying, Twilight, but I don't believe that Guitar Riff had a red gem in her chest when I saw her last," Luna pointed out. "Singing, did you notice this at all?"

"I did, but I didn't say anything 'cause I was-" I tried to reply.

"-afraid that other ponies would become afraid of your sister and abuse you like the ponies back in your village did," Luna interrupted me, knowing what I would say. "It's okay, and I understand your concern. We will have much to discuss around you two ponies."

"I had the Royal Guard investigate the village you once lived in," Celestia said, "and what they went through as mere visitors was absolutely atrocious. They also confirmed sightings of Windigoes, kept at bay only by the fillies that secretly banded together to protect themselves."

"So it IS Windigoes!" Twilight exclaimed, happy to know that her hypothesis was correct, but unhappy that Windigoes still lived in Equestria, living in the midst of ponies guilty and innocent alike.

"Indeed it is," Celestia said somberly. "I hope that you have already explained to these ponies what danger their village brings to Equestria."

"I explained to them the story of Hearth's Warming Eve," Twilight replied. "They have only nightmare stories in their village: those of Nightmare Moon, Dischord, Sombra, among others."

"I see," Celestia said thoughtfully. "I believe, however, that these two ponies can tell us of their village better than anypony else here."

"I can tell you one thing, Princess: THEY DIDN'T KNOW ABOUT HARMONY UNTIL THEY CAME TO PONYVILLE!" Pinkie burst out, still not quite over that little fact.

"It's true, Princess Celestia," I said while Guitar and I bowed to the ruler of Equestria. "Our village is a village of nightmares. We lived every day in fear, the adults never showing any signs of the spirits of the Elements of Harmony anywhere in the village. We are constantly ravaged by snowstorms from the Windigoes, and the adults all blame each other. We know little of your sun, Celestia, but we know much of Luna's moon because we, along with other fillies, would sneak out while the adults slept and would gather together to celebrate the softness of the moon, which came out every night. It was always in one of those nights and never the day when we would discover our Cutie Marks and our special talents. We ran away because the night we ran away, our mother decided to bring back out her whip with dragon tooth tips. We ask for your help for the sake of the fillies back home, especially our siblings."

"Please, you have no need to bow to me," Celestia said, much to our surprise, "and thank you for your account of your life in the village. Sunset Shimmer, What a surprise. You have returned."

Sunset came forward shyly and bowed deeply to the princess, saying, "Princess Celestia, I only come back for a visit. I came to apologize for everything I have done: for abandoning your teachings, for stealing Twilight's crown and Element of Harmony, and for attempting to use it to take over the mirror world and Equestria. I have done so much since then, though, and I have discovered that I, myself, am a Spirit of an Element of Harmony, although I don't know which one I am."

Celestia simply held a hoof out in a hug, and Sunset ran into her arms, both of them giving each other a huge embrace. I smiled at the fact that Celestia forgave her old student, and that Sunset could live her life happy of that forgiveness.

"I am simply happy that you returned, Sunset Shimmer," Celestia said happily. "I forgive you. You have certainly atoned for your deeds of the past, and you are definitely not the same pony that left your studies all those years ago. I am happy that you have found your place in the mirror world, and although I hoped you would stay in Equestria, the choice is always yours and I will support it all the way."

"Thank you, Princess Celestia," Sunset said gratefully.

Guitar Riff

"Now the matter of the gem in Guitar Riff's chest," Luna said, startling me out of my thoughts about what the Sirens had said back in the mirror world.

"Yeah, how did you get that?" Starlight asked, making me nervous around the powerful unicorn.

"I'm not entirely sure myself," I half-lied. "I know that I got a necklace with this gem back at in the mirror world, and I played in the performance with Twilight, Sunset, Singing, and some girls from that world. I kept the necklace on when I went back through the portal, and next thing I know it's embedded in my chest."

"Are you sure that this is all?" Luna asked, always able to see through the half-lies I used to tell her.

I didn't want the rest of the princesses to know about my transformation, so I lied again, "Yes, that's all."

Luna looked like she wanted to ask more questions, but seemed to resign from doing so.

"In any case, such an occurrence has only happened once in Equestria's history, with the rise of the Sirens," Celestia said. When we all looked at her quizzically, she narrated while showing us the story with her magic like Twilight and Starlight once did, "Long ago, before Starswirl the Bearded became the unicorn everypony knows him as, three unicorns with beautiful voices and no Cutie Mark named Adagio Dazzle, Aria Blaze and Sonata Dusk lived in a village full of tense Unicorns. This was before the three tribes first came to Equestria, so they were still separate. The three unicorns were sad that they didn't have their Cutie Mark and were regarded as useless. One day, an Alicorn male named Sirenmaker met them and gave them three special necklaces with red gems, saying that the gems would give them powers unlike any unicorn in existence. As he was an Alicorn, they trusted him, and they all wore the necklaces with pride. They soon discovered that the gems' power was used whenever they sang, and they began their rise to power. The more negative energy the unicorns absorbed through the necklaces, the more unponylike they became, their tails and hind legs becoming like those of a fish, and their features growing sharper, the necklaces' gems becoming embedded in much the same place Guitar's is now. They lost their horns, but reveled so much in the power that the necklaces gave them that they did not care for it. The wherabouts of the Alicorn known as Sirenmaker is unknown, but we do know that he came from where Luna and I did, and that he was a criminal, banished for dabbling in very dark magic, darker than even Nightmare Moon's magic was. We can only hope that he has passed with the years, and that he can no longer fool ponies into becoming what those poor unicorns became. Starswirl banished the sirens to another world, and they were never seen in Equestria again. Rumor has it that Sirenmaker went with them to their banishment place, and that he and they plot revenge on Equestria, even to this day. I believe Twilight knows the fate of the Sirens?"

"I do," Twilight said, taking over the magic presentation. "I was called back to the mirror world after retrieving my crown, and my friends there told me that three girls were taking over the school with what they believed to be dark magic and singing, and I did some research and discovered that the Sirens were the ones causing trouble. They were doing what they did in Equestria, and nearly stole all power from my friends because they were fighting so much. Sunset Shimmer was the one to get us to work together to defeat the Sirens, and we broke their gems, depriving them of their power. I didn't know that there were more gems."

"As long as Sirenmaker lives, he can produce the gems on his own," Luna stated. "I did extra research and found out that the source of his power to create Sirens comes from a green gem given to him by Dischord back before he was reformed. If the gem is destroyed, so will Sirenmaker and any possible chance of any more sirens be. It seems to me, however, that Guitar has somehow fallen prey to this magic, and that she will need to find a way to destroy the gem before it transforms her into a Siren, as well."

"What am I supposed to do?" I asked reluctantly, not wanting to get rid of the power that I had as a young siren. It was too delicious to give up.

"Never even attempt to use it anymore. It can only be used if you are singing," Luna suggested. "Of course, we will have to find Sirenmaker's gem to get rid of this power forever."

* * * * * TIME SKIP * * * * * *

That night, I took my guitar and snuck outside. I crooned a lullaby to all of Canterlot, relishing in my power that was coming inside of me through the green mist that went into my gem. I felt my body transform, and I realized that I could now fly! I flew straight back to Ponyville to the balcony of my shared room with Singing.

I hesitated a moment before going through the mirror. What about Singing? I thought. I then shook the thought out of my head, only wanting the power of the Sirens for my own. I went through the portal, wanting to join my fellow Sirens and share their power.