Glassworks - Opening, Etudes No. 2 & 5 - arranged for Piano Quintet Score and Parts (Sheet Music) Instrumental (50603428) by Hal Leonard
Philip Glass: Glassworks album review @ All About Jazz
The Aesthetics of Minimalist Music and a Schenkerian-Oriented Analysis of the First Movement "Opening" of Philip Glass' Glassworks - UNT Digital Library