(Slightly non-canon, I guess you could call it AU.)

(You are Adagio Dazzle.)

You are Adagio Dazzle. You are the leader of a group of three sirens, often referred to as the Dazzlings. You are quite egotistical, sarcastic, cruel, narcissistic, and manipulative. You enjoy demonstrating your dominance, sometimes to the detriment of the other two members, Aria Blaze and Sonata Dusk, even though they are also members of the group.

The three of you were exiled from Equestria to the human world long ago because you tried to absorb as many negative emotions as possible. It took you a long time to get used to the human body. It was unusual for you, but over time, all three of you adapted and were forced to live in the human world for many years, pretending to be human. But you never gave up on your quest to gain power and return to Equestria.

You're selfish and narcissistic by nature, manipulative, cunning, and constantly boasting about your superiority. Aria is somewhat similar to you, but she's also a rebel and often tried to challenge your leadership, which, of course, didn't please you. As for Sonata, she's simply sweet, carefree, and a little naive. Sometimes she can say the wrong thing.

Recently, you, Aria, and Sonata went to Canterlot High School to absorb as much negative emotion as possible, take over the students' minds, and gain power. Of course, you came up with this brilliant plan, even though Aria didn't think it was all that good; she never liked your plans, and you generally didn't care much for her opinion or Sonata's.

As it turned out, the three of you were very lucky, there was a band competition at school. You immediately realized this was your chance. You immediately told Aria and Sonata about the plan. Of course, they were hesitant, but they still followed you, as always. You immediately managed to turn almost everyone in the school against each other, everyone except one group, the Rainbooms, a group of six seemingly ordinary girls: Rainbow Dash, Rarity, Pinkie Pie, Fluttershy, Applejack, and Sunset Shimmer.

You immediately realized these girls were special, since your singing had no effect on them, but you didn't perceive them as a threat, confident of victory. The competition was scheduled to begin tonight. You, Aria, and Sonata were ready, absorbing the negative energy into your red pendants—these pendants were the source of your power.

So, the competition began. It was held in the school's backyard. When it was your group's turn, the three of you took the stage and began performing. You sang, and Aria and Sonata sang along. You managed to hypnotize everyone present, but suddenly the Rainbooms appeared and began interfering. At one point, your power became so overwhelming that you abandoned Aria and Sonata and took their power for yourself, determined to defeat the Rainbooms alone. At that moment, you didn't care about Aria and Sonata.

But the Rainbooms managed to defeat you, despite your superiority, in your full siren form. After your defeat, you lost your power, and your pendant shattered into pieces, leaving you unable to even stand up. It seemed everyone had forgotten about you, and everyone began celebrating the Rainbooms saving everyone from you. While you were lying on the ground, Aria and Sonata approached you. They both looked understandably upset, but you hadn't lost hope.

"Girls, you'll help me, right? I'm sorry I abandoned you. You know me. Sometimes I can act... rashly. I didn't mean to abandon you."

You were clearly trying to justify yourself. You still hoped Aria and Sonata would help you. They didn't answer your question, but they helped you up, knowing you couldn't get up on your own. Aria looked at the Rainbooms and the other celebrating students and said, turning to you and Sonata.

"We're leaving."