const int buzzerPin = 8;

int melody[] = {
  264, 264, 297, 264, 352, 330,    // Selamat ulang tahun
  264, 264, 297, 264, 396, 352,    // Selamat ulang tahun
  264, 264, 528, 440, 352, 330, 297, // Selamat panjang umur
  466, 466, 440, 352, 396, 352     // Kita 'kan doakan
};

int noteDurations[] = {
  4, 4, 2, 2, 2, 1,
  4, 4, 2, 2, 2, 1,
  4, 4, 2, 2, 2, 2, 1,
  4, 4, 2, 2, 2, 1
};

void setup() {
  // tidak diperlukan
}

void loop() {
  int length = sizeof(melody) / sizeof(melody[0]);

  for (int thisNote = 0; thisNote < length; thisNote++) {
    int noteDuration = 1000 / noteDurations[thisNote];
    tone(buzzerPin, melody[thisNote], noteDuration);

    int pauseBetweenNotes = noteDuration * 1.30;
    delay(pauseBetweenNotes);

    noTone(buzzerPin);
  }

  delay(1000); // jeda antar pengulangan lagu
}