void setup() {
  // put your setup code here, to run once:
pinMode(13, INPUT);
pinMode(4, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
for (int i = 0; 1 < 2; i++){
  tone(4, 660);
  digitalWrite(13, HIGH);
  delay(400);
  digitalWrite(13, LOW);
  noTone(4);
  delay(50);

  tone(4,860);
  delay(450);
  noTone(4);
  delay(50);
}
}