Ali Project
The music for "Avenger" was composed and performed by Japanese duo Ali Project, which has also contributed music to several, other anime series, including "CLAMP School Detectives", "Noir", "Princess Resurrection" and ".hack//Roots". The series opening Lunar Eclipse Grand Guignol (月蝕グランギニョル Gesshoku Guran Ginyoru) and ending (Mirai no Eve) themes and the score overall are considered by some fans and reviewers to be among the show's most memorable elements. An Original Soundtrack album was released in Japan in 2003.