Stairway to Heaven played on Arduino with buzzer

SKETCH

CODE

#define NB0  31

#define NC1  33

#define NCS1 35

#define ND1  37

#define NDS1 39

#define NE1  41

#define NF1  44

#define NFS1 46

#define NG1  49

#define NGS1 52

#define NA1  55

#define NAS1 58

#define NB1  62

#define NC2  65

#define NCS2 69

#define ND2  73

#define NDS2 78

#define NE2  82

#define NF2  87

#define NFS2 93

#define NG2  98

#define NGS2 104

#define NA2  110

#define NAS2 117

#define NB2  123

#define NC3  131

#define NCS3 139

#define ND3  147

#define NDS3 156

#define NE3  165

#define NF3  175

#define NFS3 185

#define NG3  196

#define NGS3 208

#define NA3  220

#define NAS3 233

#define NB3  247

#define NC4  262

#define NCS4 277

#define ND4  294

#define NDS4 311

#define NE4  330

#define NF4  349

#define NFS4 370

#define NG4  392

#define NGS4 415

#define NA4  440

#define NAS4 466

#define NB4  494

#define NC5  523

#define NCS5 554

#define ND5  587

#define NDS5 622

#define NE5  659

#define NF5  698

#define NFS5 740

#define NG5  784

#define NGS5 831

#define NA5  880

#define NAS5 932

#define NB5  988

#define NC6  1047

#define NCS6 1109

#define ND6  1175

#define NDS6 1245

#define NE6  1319

#define NF6  1397

#define NFS6 1480

#define NG6  1568

#define NGS6 1661

#define NA6  1760

#define NAS6 1865

#define NB6  1976

#define NC7  2093

#define NCS7 2217

#define ND7  2349

#define NDS7 2489

#define NE7  2637

#define NF7  2794

#define NFS7 2960

#define NG7  3136

#define NGS7 3322

#define NA7  3520

#define NAS7 3729

#define NB7  3951

#define NC8  4186

#define NCS8 4435

#define ND8  4699

#define NDS8 4978

#define melodyPin 3

int melody[] = {

  NA4, NC5, NE5, NA5, NB5, NE5, NC5, NB5, 

  NC6, NE5, NC5, NC6, NFS5, ND5, NA4, NFS5, 

  NE5, NC5, NA4, NC5, 0, NE5, NC5, NA4, 

  NG4, NA4, NA4, 0, 0, NA4, NF5, NE5,

  NA4, NA4, NC5, NE5, NB5, NE5, NC5, NB5, 

  NC6, NE5, NC5, NC6, NFS5, ND5, NA4, NFS5, 

  NE5, NC5, NA4, NC5, 0, NE5, NC5, NA4, 

  NG4, NA4, NA4, 0, 0, 0, NA4, NB4,

  NC5, NE5, NG5, NC5, NB4, ND5, NG5, NB4, 

  NB4, NC5, NA4, NA4, NC5, NE5, NA5, NA4, 

  NB4, NC5, NG4, NC4, NC5, NG5, ND5, NG4, 

  NG5, NG5, NFS5, ND5, ND5, 0, 0, NA4, NB4, 

  NC5, NE5, NG5, NC5, NB4, ND5, NG5, NB4, 

  NB4, NC5, NA4, NA4, NC5, NE5, NA5, NA4, NB4, 

  NC5, NE5, NG5, NC6, ND5, NFS5, NA5, 

  ND6, NE5, NE5, NE5, 0, 0,

};

int tempo[] = {

8, 8, 8, 8, 8, 8, 8, 8,

8, 8, 8, 8, 8, 8, 8, 8,

8, 8, 8, 4, 12, 8, 8, 8,

8, 8, 8, 8, 4, 8, 8, 8,

8, 8, 8, 8, 8, 8, 8, 8,

8, 8, 8, 8, 8, 8, 8, 8,

8, 8, 8, 4, 12, 8, 8, 8,

8, 8, 8, 8, 4, 8, 8, 8,

8, 8, 8, 8, 8, 8, 8, 8,

16, 16, 8, 8, 8, 8, 8, 8, 8, 

8, 8, 8, 8, 8, 8, 8, 8,

16, 16, 8, 4, 12, 8, 8, 8,

8, 8, 8, 8, 8, 8, 8, 8,

16, 16, 8, 8, 8, 8, 8, 8, 8, 

8, 8, 8, 8, 8, 8, 8, 

8, 8, 8, 8, 2, 4, 4,

};

void setup(void)

{

  pinMode(3, OUTPUT);

  pinMode(13, OUTPUT);

}

void loop()

{

  sing(1);

}

int song = 0;

void sing(int s) 

{

  song = s;

  if (song == 1) {

    Serial.println(" 'Stairway to Heaven'");

    int size = sizeof(melody) / sizeof(int);

    for (int thisNote = 0; thisNote < size; thisNote++) {

      int noteDuration = 1200 / tempo[thisNote];

      buzz(melodyPin, melody[thisNote], noteDuration);

      int pauseBetweenNotes = noteDuration * 1.30;

      delay(pauseBetweenNotes);

      buzz(melodyPin, 0, noteDuration);

    }

  } 

  }

void buzz(int targetPin, long frequency, long length) {

  digitalWrite(13, HIGH);

  long delayValue = 1000000 / frequency / 2;

  long numCycles = frequency * length / 1000; 

  for (long i = 0; i < numCycles; i++) { 

    digitalWrite(targetPin, HIGH);

    delayMicroseconds(delayValue);

    digitalWrite(targetPin, LOW); 

    delayMicroseconds(delayValue);

  }

  digitalWrite(13, LOW);

}