int buzzer = 8;
int led = 9;
int tombol = 2;

int melodi[] = 
{
  262, 262, 392, 392, 440, 440, 392,
  349, 349, 330, 330, 294, 294, 262,
  392, 392, 349, 349, 330, 330, 294,
  392, 392, 349, 349, 330, 330, 294,
  262, 262, 392, 392, 440, 440, 392,
  349, 349, 330, 330, 294, 294, 262
};

int durasiNada[] = 
{
  500, 500, 500, 500, 500, 500, 1000,
  500, 500, 500, 500, 500, 500, 1000,
  500, 500, 500, 500, 500, 500, 1000,
  500, 500, 500, 500, 500, 500, 1000,
  500, 500, 500, 500, 500, 500, 1000,
  500, 500, 500, 500, 500, 500, 1000
};

void setup() {
  // put your setup code here, to run once:
  pinMode(buzzer, OUTPUT);
  pinMode(led, OUTPUT);
  pinMode(tombol, INPUT_PULLUP);
};

void loop() {
  // put your main code here, to run repeatedly:
 if (digitalRead(tombol) == LOW) {
  mainkanLagu();
  delay(1000);
 }
}

void mainkanLagu()
{
  for (int i=0; i < 28; i++){
    tone(buzzer, melodi[i]);
    digitalWrite(led, HIGH);
    delay(durasiNada[i]);
    digitalWrite(led, LOW);
    noTone(buzzer);
    delay(50);
  }
}