arduino MidiOut Shield with Fritzing

Buttons
the 8 buttons per Arduinio gave us plenty of digital input pins. we no longer needed shift registers, and could use a simplified button circuit:
http://www.arduino.cc/en/Tutorial/Button

RGB LEDs
the lighting control came after much experimentation with very bright RGB LEDs. These were broken out to their own board with independent power supply. the Arduino could not drive the high powered LEDs and placement needed to be more flexible. The Arduino controls the RGB values via three P