" The actual sound of Central European art music, especially the chamber music, was a solid part of me from an early age but maybe not audible in my music until almost five decades later, when I began to compose sonatas and unaccompanied string pieces as well as quite a lot of piano music. Though I did write a few string quartets for the Kronos Quartet, and some symphonies besides, these works from my forties, fifties, and sixties didn’t owe that much to the past. Now that I’m in my seventies, my present music does. It’s funny how it happened this way, but there it is. "

― Philip Glass , Words Without Music: A Memoir