Simple Harmonic Motion

Simple Harmonic Motion is an independent label devoted to contemporary and experimental music grounded in structural balance and open-form practice. The label presents both original compositions and significant works from the American experimental tradition, with an emphasis on clarity of form, spatial organization, and performer agency.

Recent releases include recordings of John Cage’s Atlas Eclipticalis and Earle Brown’s Four Systems, alongside new works that explore disciplined form within modern compositional language.

New From Simple Harmonic Motion…

 

Four Systems

Four distinct realizations of Earle Brown’s celebrated 1954 graphic score

Composition Realizations by John Bickerton

Atlas Eclipticalis

The Music of John Cage and Earle Brown

Composition Realizations by John Bickerton

Recent Articles

Eliane Radigue's ARP 2500

Éliane Radigue: The New York Synthesis

Éliane Radigue's time in New York City was a pivotal turning point in her career, marking her transition from the tape-based methods of musique concrète to a lifelong mastery of modular synthesizers. The NYU Residency (1970–1971) In 1970, Radigue was invited to a...
Éliane Radigue

Éliane Radigue and the Radical Power of Slowness

Éliane Radigue, who passed away in February 2026 at the age of 94, was a composer who redefined our relationship with time and sound. Across a career spanning over six decades, she evolved from an apprentice of the musique concrète pioneers to a master of the modular synthesizer, and finally to a collaborative architect of acoustic drone. Her journey is not just one of technological shifts, but of a deep, lifelong commitment to the “inner richness of sound”.

Earle Brown’s Four Systems: The Mobile Score

Four Systems is an early work in Earle Brown’s development of open-form composition, notated through graphic means rather than fixed musical prescription. This recording presents four distinct realizations, each tracing a different structural path through the score’s visual architecture.

The work may be performed by any number of musicians and for any agreed duration. Its unfolding depends on moment-to-moment decisions by the performers, individually and collectively. Each realization emerges through interpretation and interaction, guided by the score’s spatial design rather than conventional notation.

Perfect Lives - A television opera by Robert Ashley

What Makes Perfect Lives a Radical Kind of Opera?

The Unique Structure of Robert Ashley’s Television Opera Robert Ashley's Perfect Lives employs a deliberately unconventional narrative structure that significantly departs from traditional opera and from typical linear storytelling. The narrative follows an...