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Quasi helio sonic

Sheet Music: Performance Parts

Quasi helio sonic : 10 forms of change no.1 / Michael Knopf.

by Michael Knopf (2013)

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  • Library Availability: This item is not available from the Australian Music Centre Library
  • Instrumentation: Fixed audio (wav. x 2), clarinet, violin, piano. 2 x Loop Pedals required for violin and clarinet plus appropriate sound reinforcement. Piano may be mic'd to allow conformity between the instruments in sound. Optional performance without electronics.


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The audio file used as the introduction to the work is also its primary inspiration. These are my own mix of several filtered and transposed audio files prepared by scientists at the University of Birmingham using helioseismology. (Bison - Birmingham Solar Oscillations Network. see: http://bison.ph.bham.ac.uk/index.php?page=bison) My thanks to Graham Verner and Brek Miller for their assistance and permission to use these in my work.

The piece is inspired by these recordings but does not convey anything more than music.

This is my first work deliberately using the Ten Forms of Change model (attributed to Coker 1972). I discovered these several years ago by reading Kim Stanley Robinson's futuristic novel The Memory of Whiteness. The novel follows the development of Sol system's premiere composer/performer using the 10 Forms in his work, realising that they are linked intrinsically with the fundamental reality of our universe. I have been periodically using these descriptions of musical change consciously in my composing and improvising as articulated strategies to direct creativity. Nonetheless, I do not adhere only to devices for their own sake, but instead, use them to foster my organic approach to composing. I am conscious of specific strategies in composing, but I essentially take a path of growth, where new musical ideas and concepts direct development, placement and contexts.

Published by: Australian Music Centre — 1 set of 3 performance parts (71p. -- A4 (portrait))

Difficulty: Advanced — Rapid phrase changes in tempo, angular melodic lines, pianist operates sound from laptop

Duration: 10 mins

Dedicated to Plexus Ensemble

First performance by Plexus Ensemble — 27 Oct 14. Lithuanian Club, Melbourne

Piano part is a copy of the full score.

Typeset edition.

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Quasi helio sonic
Score: Quasi helio sonic : 10 forms of change no.1 / Michael Knopf.


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