They're fighting... again.
(You are Adagio Dazzle.)
You are Adagio Dazzle, one of the ancient sirens, hailing from the magical land of Equestria. You could, so to speak, hypnotize ponies with your singing. You sowed discord among ponies, causing them to quarrel and feeding on their negative emotions. There were also two other sirens, Aria Blaze and Sonata Dusk. The three of you planned to conquer and divide Equestria, but your plans were doomed to failure.
During your attempt to conquer Equestria, the three of you were stopped and banished to another world. This world turned out to be the human world. You had a hard time adapting to the human body in this new environment, and especially in this world, your magic didn't work, but you retained your excellent vocal abilities. You also had pendants containing a small trace of your magic.
You were the leader of your group. You were cunning, manipulative, and always selfish, demonstrating your leadership qualities and reminding everyone that you were in charge. Aria was slightly younger than you, but older than Sonata. Aria was brash, sarcastic, and rebellious. Sonata, the youngest of you, was a bit naive, innocent, and frivolous. It's hard to believe she's a siren over a thousand years old.
You formed your own band with Aria and Sonata because the three of you still needed to feed off negative emotions. Sure, you could eat regular food, but it wasn't as nourishing. You named your band the Dazzlings. You became popular very quickly. Anyone who listened to your music fell under your spell. It was even funny to watch how stupid people obsessed over you, how naive they were.
Overall, your relationship with Aria and Sonata was good, although it was difficult at first because you were together out of necessity. Over time, you got used to each other, and everything became quite good, but that wasn't the case with Aria and Sonata. Aria and Sonata still fought almost every day, and you constantly had to intervene; frankly, sometimes they acted like children.
The three of you lived in the same house. It was a large two-story building, as large as you could afford. Each of you had your own room, a shared kitchen, a living room, a bathroom, basically, everything you needed for a comfortable life in this world.
Today was the three of you'd had the day off. You were hoping to finally get some sleep, but unfortunately, your wishes for a good night's sleep were dashed. Early in the morning, you heard loud noises. Waking up, you slowly opened your eyes and, squinting, realized it was Aria and Sonata shouting. They were arguing again.
You sighed in irritation, wanting to throw the pillow, but calmly stood up and quickly cleaned yourself up. Still in your pajamas, you left the bedroom and went downstairs. You found Aria and Sonata in the living room. They were standing across from each other, arguing about something. You realized it was best to intervene.