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Article
Arizona State University

Arizona State University: Why Was the Valve Invented?

For Students 9th - 10th
Dr. Ericson holds firm to his beliefs that the valve was not invented as "a mere crook changing device." Dr. Ericson embraces the idea that the "co-inventors of the valve clearly intended to perfect the brass instruments by making them...
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Article
Arizona State University

Arizona State University: Keyed Horns and Slide Horns

For Students 9th - 10th
This ASU piece of writing takes us on a journey through the development of the horn's ability to play a chromatic scale with some degree of ease. The "experimenters" are presented--their country, years of experimentation, and outcome of...