#include <MIDI.h>

#define LED 13   		// LED pin on Arduino board

void setup() {
  pinMode(LED, OUTPUT);
  pinMode(2,INPUT);
  MIDI.begin(4);            	// Launch MIDI with default options
				// input channel is set to 4
}

void loop() {
  if (digitalRead(2)){
    digitalWrite(LED,HIGH);     // Blink the LED
    MIDI.sendNoteOn(42,127,1);  // Send a Note (pitch 42, velo 127 on channel 1)   // Stop the note

  }else{
    digitalWrite(LED,LOW);
  }
}