 #define NOTEOFF 0x80
 #define CHANGEINSTRUMENT 0xC0
 
+#define INSTRUMENT 0x39
+
 // Values for different notes
+// Currently a C scale, starting from middle C (C4)
 int note8 = 0x48;
 int note7 = 0x47;
 int note6 = 0x45;

int note2 = 0x3E;
int note1 = 0x3C;

int noteSet = 1;

void setup()
{

/* Code for laser guzheng
 * Copyright (C) 2016 Jason Lu
 * 
 * Licensed under the MIT License
 */ 
 
/* Uncomment the define if you are using a wind instrument, such
 * as a trumpet or flute. It will disable several things that
 * are specific to string and percussion instruments. DO NOT
 * uncomment it if you are using a piano or string instrument! */
// #define WIND

// Port I/O defines
#define THRESHOLD 500
#define LASTPORT 4

// MIDI property defines
#define VOLUME 0x7F
#define DELAY 10

// MIDI command defines
