I wonder why no company has made one-chip Arduino complete with 9V tolerant Vcc pins, on-chip DC-DC, crystal, secondary AVR for USB and LEDs through round glass window on top of a 30-pin DIP ...

Now that the YM2149 chip is working correctly, [Oryx] is planning to make a MIDI synth out of his project. You can get an idea of how that will sound with the demo video he put up after the break.