Perspectives: Peter Serkin Focus On: Stravinsky Pre-concert lecture with Peter Lieberson, Charles Wuorinen, and Ara Guzelimian at 7:00PM on stage. Peter Serkin was unable to perform due to emergency eye surgery for a detached retina. Peter Lieberson's "Red Garuda" was replaced with his "Drala". The Stravinsky "Variations" was performed twice. NEW YORK PREMIERE of Charles Wuorinen's SYMPHONY SEVEN