The Musical Prisoner

Long ago in Equestria there lived a pony who played beutifully for everypony there was. She played every morning and evening for the ponies. The ponies even danced to the music. Then one day she snapped and killed her own brother, and sister. Other ponies and fillies as well. But Princess Celestia locked her away. To this day that evil pony has been locked up ....... for now.