William Copper

Composer of contemporary classical music, theorist, and the world’s authority on the science of structuring music according to intonation.

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A complete selection of works by William Copper.



Commission a custom piece for your ensemble.

“The perfect choral work!”
Ave Regina Caelorum
“A sophisticated and dramatic work, full of pathos.”
Stabat Mater
“Super innovative!”
Elixir of Love
“A work of singular grace.”
Lovelife Dances
“A gem.”
In memoriam Shostakovich for Piano Trio
“I love, love, love it!”
Ave Regina

wholly enrapturing Ave Regina achieves a lyrical grandeur

“First prize.”
String Quartet #1
Prisma Vol. 5

Latest Release

This Full Bowl Of Roses, Part III

A fugue appropriate to the image of the roses in the bowl, as described so beautifully in the poem of the same name by Ranier Maria Rilke.

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Sheet Music Store

Browse the Hartenshield Music publishing catalog and purchase music for orchestras, chamber ensembles, and more.