Unreleased recordings from the late 70s, performed by Glass (Farfisa, Yamaha & Hammond organs, Fender Rhodes piano, Arp synthesizer). New release which contains three seminal works in Glass's musical history. In the late 1970s, Philip Glass was asked by two film producers, Francois de Menil and Barbara Rose, to write music for a film they were producing. The film was Mark di Suervo, Sculptor and it was Glass's first film score, predating even Koyaanisqatsi. The score took its titles from the names of di Suervo sculptures shown in the film, including Etoile Polaire (North Star) and others. The disc also includes 'Dressed Like an Egg' -- a never before released early Glass score which was written as incidental music to a Mabou Mines Theater Company production in 1977. The disc is rounded out with another never-before-heard recording of Glass' 'Mad Rush' for organ. The work was originally used by choreographer Lucinda Childs for a dance of the same name. All the performances on Analog feature original performances by Philip Glass on electric organ.