奥井雅美 (Okui Masami), born March 13, 1968, is a Japanese singer and composer. She was born in Itami. She releases new albums each year, featuring lyrics and melodies which she composes herself. She likes to experiment with various music styles (from electro to soft ballads, eurobeat or heavy rock) but her overall style is pop/rock. She is also known for having composed and/or performed anime songs for various series including Revolutionary Girl Utena, Slayers, Sorcerer Hunters, Magic User's Club, Jungle de Ikou, Scrapped Princess, Akihabara Dennou Gumi, and Yu-Gi-Oh! Duel Monsters.