int a=10;
void setup() {
  // put your setup code here, to run once:
pinMode(a, OUTPUT);
}
void loop() {
  // put your main code here, to run repeatedly:
delay(0);
tone(a,262);
delay(500);
noTone(a);
tone(a,294 );
delay(400);
tone(a,330);
delay(400);
tone(a,349);
delay(400);
tone(a,392);
delay(400);
tone(a,440);
delay(400);
tone(a,494);
delay(400);
tone(a,523);
delay(400);
}