int buzzPin = 7;

void setup() {
  pinMode(buzzPin, OUTPUT);
}

void loop() {
  playNote(500, 200);  
  delay(100);  

  playNote(500, 200);  
  delay(100);           

    playNote(500, 200);  
  delay(130);    

    playNote(525, 125);  
  delay(100); 

      playNote(525, 125);  
  delay(100);            
     
}

void playNote(int frequency, int duration) {
  tone(buzzPin, frequency, duration);
  delay(duration);
  noTone(buzzPin);
}