The Dallas Opera has the very cool feature now of every time the chandelier goes up before a performance, Philip Glass' "The Light" will play in the hall. 

Meanwhile….in Dusseldorf, Glass' newest piece (and something of a sequel to "Four Movements for Two Pianos") is having its premiere.  "Two Movements for Four Pianos" is being performed, as I type, at the Klavier Festival Ruhr by pianists Maki Namekawa, Dennis Russell Davies, Katia and Marielle Labeque.