Philip Glass photographed in New York City in 1980. Jack Mitchell/Getty Images hide caption

itoggle caption Jack Mitchell/Getty Images

"I'm more and more coming to the idea," composer Philip Glass says, "that it's the lineage and the connection to the past and the connection to the future — that is the real connection." Eamonn McCabe/Redferns hide caption

itoggle caption Eamonn McCabe/Redferns

Four Organs by Steve Reich was performed Tuesday at the Brooklyn Academy of Music as part of the 50th anniversary of the Nonesuch label (from left: Philip Glass, Nico Muhly, David Cossin, Timo Andres and Steve Reich). Stephanie Berger hide caption

itoggle caption Stephanie Berger

Electronic artists such as Mason Bates (pictured above), Aphex Twin and Tiësto have blended classical music into their dance beats. Courtesy of the artist hide caption

itoggle caption Courtesy of the artist

A scene from the revival of Einstein on the Beach. Los Angeles Opera hide caption

itoggle caption Los Angeles Opera

Philip Glass (left) and Beck. Courtesy of the artists hide caption

itoggle caption Courtesy of the artists