Kaerazaru Hyouga

A girl, the daughter of a king and an opera singer, is targeted by assassins due to a scandal. Her mother, before dying, makes her swear to leave their homeland. She survives by singing on the streets, using songs taught by her mother. She meets Johan, an accordion player, and they travel together performing music. A mistake by assassins leads to an attack at the nursing home where she is staying. She joins a group of gypsies and is later discovered by Alex Lee, a well-known manager. With his help, she debuts as a singer under the name Odette Lauryn. She achieves global fame and eventually performs in her hometown before the king.