void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:
  // turn off tone function for pin 8:

  noTone(8);

  // play a note on pin 6 for 200 ms:

  tone(6, 400, 200);

  delay(300);

  // turn off tone function for pin 6:

  noTone(6);

  // play a note on pin 7 for 500 ms:

  tone(7, 800, 500);

  delay(200);

  // turn off tone function for pin 7:

  noTone(7);

  // play a note on pin 8 for 300 ms:

  tone(8, 600, 300);

  delay(300);

}