void setup() {
  // put your setup code here, to run once:
pinMode(19, OUTPUT);
pinMode(18, OUTPUT);
pinMode(5, OUTPUT);
}
void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
tone(19, 1000);
tone(18, 100);
tone(5, 300);
delay(100);
}