[ALTERNATIVE FREQUENCY 025] Terry Riley, Kronos Quartet – Terry Riley: Sun Rings: Planet Elf Sindoori


[ARTIST] Terry Riley, Kronos Quartet
[TRACK] Planet Elf Sindoori
[ALBUM] Terry Riley: Sun Rings
[LABEL] Nonesuch Records (2019 release)

Sun Rings began with a call from NASA to Kronos Quartet’s manager. The twenty-fifth anniversary of the Voyager 1 space probe’s launch was coming, and the agency wondered if Kronos would be able to use the “space sounds” that Voyager 1 and 2, as well as other spacecraft, had sent back to Earth in its performances.

A meeting was quickly arranged between Kronos’ artistic director, founder, and violinist David Harrington and University of Iowa physics professor Don Gurnett, who had developed the plasma wave instruments that had received these sounds. After listening to Gurnett’s collection of favorite “space sounds,” Harrington says, “I instantly knew Terry should be the composer to bring them into our work.” At that point, Riley and Kronos had been working together for more than twenty years, beginning with the composer’s Sunrise of the Planetary Dream Collector. Harrington continues, “Eventually this led to all sorts of sonic adventures in Don’s office.”

Gurnett says, “The resulting meeting was one of the most memorable in my life, as it involved a very unusual art-science collaboration between a group of musicians and myself, a scientist who had never played a musical instrument… Of course, as a scientist, I tried to explain how these sounds were produced; however, the discussion soon turned to more philosophical questions: Are these sounds musical? Can nature produce music?” In explaining the “space sounds,” or more accurately plasma waves, recorded via NASA spacecraft, he says, “Contrary to common conception, space is not a vacuum. It always has a finite density and temperature: sometimes ionized in the form of a plasma, and sometimes in the form of an electrically neutral gas. Thus, sound waves can indeed propagate in space.”

After Gurnett gave him cassettes with these sounds on them, Riley says, “I began to listen to see what kind of musical element could be buried deep within the spectrum of their mostly raw, grainy sound. There was a wide variety of sonic textures and frequencies of the different samples, often resembling both natural and synthesized sounds found here on Earth.” Many of the samples were eventually integrated into Riley’s composition.

Commissioned in part by the NASA Art Program, Sun Rings premiered at University of Iowa’s Hancher Auditorium in October 2002. It has become a landmark piece in the canon of both Riley and Kronos.
-Nonesuch Records