12′

Music by Philip Glass.
Published by Dunvagen Music Publishers.

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Music in Similar Motion is an open score which can be performed by any group of instruments; it is not confined to the arrangement listed. New orchestration for chamber orchestra written in 1981.

The real innovation in “Similar Motion” is its sense of drama. The earlier pieces were meditative, steady-state pieces that established a mood and stayed there. But “Similar Motion” starts with one voice, then adds another playing a fourth above the original line, and then another playing a fourth below the original line, and finally a last line kicks in to complete the sound. As each new voice enters, there is a dramatic change in the music.
— Philip Glass

Music in Similar Motion at Wise Music Classical

ECORDINGS:
Music in the Shape of a Square on Stradivarius
Two Pages / Contrary Motion / Music In Fifths / Music In Similar Motion on Nonesuch

FILMS:
Four American Composers: Philip Glass by Peter Greenaway
Looking Glass by Éric Darmon