A crazy instrument which uses spherical harmonics to modulate the vertices of a sphere. These vertices are then used to generate waveforms for a simplistic additive synthesis engine. Uses opengl to display the modulated spheres (one for every voice). Pretty high cpu usage due to the need to re-calculate 1024 vertices 100 times a second though :-( .
Note: Harmonical will not work correctly on Tracktion running under OS X. On OS X, Tracktion seems to handle windows differently from every other host tested, with the result being that the title bar for the editor will not appear, making it impossible to move or hide the plugin's GUI without deleting/removing the plugin from the project.
Just in case you don't pick on the subtle hint in the readme (well, I didn't think it was that subtle, but...), Setting the odd-numbered M controls to greater than 3 or 4 will result in an extremely loud output!