Harmony 

Intro Takes place in a My Little Pony generation 4 alternate universe. Harmony is from a world filled with taking unicorns, pegasus, and earth ponies. Ruled by two alicorn sisters, and their alicorn niece. She herself in that world looks like a pony with the bottom half that of a fish. For she and her three sisters,  Adagio, Sonata, and Aria are Sirens. They were bashed by a powerful unicorn named Starswirl to the human world. Where Harmony separated herself from her sisters. You see to feed their magic to make others admire and be mind manipulated by them they music sing drawing power from the hate, and disharmony their voices bring. Harmony wanted to experience real love and admiration. So she formed her own band, but her desire for magic, to return home, and for revenge on Starswirl never quite went away. Still she finds herself happy here. Living as a secret siren. Leading her own band. With many fans. Still perhaps the most powerful kind of hate is your own.