Brano
Durata
Echoi I
Raymond DesRoches, Arthur Bloom, Charles Wuorinen, Group for Contemporary Music at Columbia University, Robert Martin
Echoi II
Charles Wuorinen, Raymond DesRoches, Group for Contemporary Music at Columbia University, Robert Martin, Arthur Bloom
Echoi III
Charles Wuorinen, Raymond DesRoches, Group for Contemporary Music at Columbia University, Arthur Bloom, Robert Martin
Echoi IV
Robert Martin, Charles Wuorinen, Group for Contemporary Music at Columbia University, Arthur Bloom, Raymond DesRoches