Alto

Alto is a fairy who is the current princess of the Kingdom of Sound, a kingdom set in an alternate dimension to Earth where magic and fantasy creatures exist and thrive. She meets Kanon and friends, who assist her in spreading beautiful songs to save her kingdom, and returns the favor by using white magic to help them.
Despite her appearance and status, she is over 50 years old and has a notably terrible singing voice. She is enthusiastic to help her friends and is fascinated with human culture.