This is a cute applet. Now for the next step: MagicBaton for Linux! This is somebody's trademark so call it Raton-Conductor. MagicBaton was a MIDI conduction program for Windows 9*, marketed as a game, from Japan. One used the mouse to actually conduct MIDI playback. Not as easy as it sounds, even with the in-the-air gyro-mouse I bought for this purpose. I saw potential in this, however, and suggested a more serious program. Apparently, there is one in Japan. One correspondant on their site actually used the program for choir rehearsals. So how would Raton-Conductor work? Again, not as simple as it sounds. Minimally, one would move the mouse in a ecliptic (or circular) motion (as suggested by MagicBaton's instructions for beginners). The size of the vertical diameter (or average diameter) would be the volume/expression and tempo or time-codes set by the change in vertical direction from down to up. Real conducting patterns are more complex but these two principals would more or less remain.
