A Standalone Equal Temperament Generator & Basic Composer
To download and run: click the "ETComposer.html" in the above list of files, then click the download symbol at the right, near the "Raw" button. The HTML file will be saved to your Downloads folder. Finally, just open/double-click the saved HTML file, and your browser will run with the webpage.
This is severely limited in that there is no setting of dynamics and articulations, no percussion, and plays only one wave type (sine, square, triangle, sawtooth). So I only use this to explore xenharmony and xenrhythm.
Distributed under the MIT software license. See the accompanying file LICENSE or https://opensource.org/license/mit/.