Select the the instrument (0-127) the duration (0.1-5 seconds) and the beginning note of the sound to play an a two-octave keyboard.

This applet only produces sounds when played as Java applet. You can open it easily from within your local GeoGebra program[br] 1. copy the web address of it ( [url]http://tube.geogebra.org/student/m1072287[/url] )[br] 2. go to your local GeoGebra application[br] 3 hold down the [b]SHIFT[/b] key[br] 4. Choose the menu [b]File>Open from GeoGebraTube…[/b][br]The applet then opens locally.