One morning, the late Karlheinz Stockhausen awoke from a dream that told him to take to the sky. Stockhausen envisioned four helicopters swirling in the clouds, with each of a quartet’s members tucked inside his own chopper, communicating through headsets, stringing away in sync to the rotor-blade motors. He immediately set forth to make that dream a reality. In 1995, Dutch film director Scheffer followed Stockhausen in the days leading up to the premiere performance of his Helicopter String Quartet in Amsterdam. The resulting film offers a rare glimpse of Stockhausen as he patiently dictates every agonizingly detailed measure to the Arditti Quartet.

The expansive length of Feldman’s Trio (1 hr., 45 min., 22 sec.) requires a new approach to listening, which takes scale, the physical experience of sound, and novel uses of musical memory into consideration. With his delicate manipulation of musical materials, Feldman blurs the listener’s sense of time as their musical memory struggles to distinguish between past and present sounds - listeners are free to lose themselves in the beauty of each musical moment. Aki Takahashi, piano; Rohan de Saram, cello; Marc Sabat, violin.

Assesses the contribution made by British avant-garde composer, Cornelius Cardew, to contemporary music. Includes interviews with Stockhausen and other composers, and extracts from Cardew's own works.