GitHub - nicholasbester/arduino-keyboard-instrument: A Keyboard instrument made using pushbuttons and a piezo speaker on an Arduino http://www.nickbester.com
Amazon.com: MIDI Shield Musical Breakout Board Instrument Digital Interface Adapter Plate for Compatible Arduino Adapter Board Module : Musical Instruments
Kit Blindage de Prototypes pour Arduino SparkFun - RobotShop
Arduino UNO As A MIDI Keyboard - Programming Questions - Arduino Forum