Zao is an avant-garde metal band originating from France, known for their complex and eclectic musical style, combining a fusion of progressive rock, jazz fusion, and heavy metal. Formed by Yochk'o Seffer (saxophones) and François "Faton" Cahen (piano) in 1971 after their departure from the band Magma, Zao's music is characterized by the dynamic interplay between saxophone and keyboards, underpinned by a robust rhythm section that often ventures into the realms of zeuhl—a genre signified by its ritualistic and repetitive compositions, in which Seffer and Cahen were pioneering figures due to their Magma heritage.

Over the years, Zao has gone through numerous lineup changes but has maintained its unique and experimental sound, often incorporating theatrical elements and a strong sense of improvisation into their live performances. Despite disbanding in the early '80s, interest in Zao's music was revived in the '90s, leading to new albums and reissues of their classic works. Their live album, "Live!", captures the raw energy and intricate musicianship that characterize their performances. Recent releases like "Typhareth," "In Tokyo," "Akhenaton," "Osiris," and "Shekina" illustrate Zao's continued dedication to pushing boundaries and exploring new musical territories, cementing their status as one of the most innovative and influential bands within their genre.