'The Lesser Lights Of Heaven' DVD documents the career of heavy rockers Zao.

A DOCUMENTARY double DVD chronicling the career of veteran American hard rock band Zao has been released in the States. 'The Lesser Lights Of Heaven' was directed by Ryan Downey, a former writer/producer for MTV. Disc 1 contains interviews with band members past and present as well as many other people associated with the group while the second disc features two full live sets. Zao are now in Greensburg, Pennsylvania preparing for a new album for Ferret, due out next year.