byte speaker= 9;

void setup(){
  }

void loop(){
  tone(speaker, 262); delay(500);
  tone(speaker, 294); delay(500);
  tone(speaker, 330); delay(500);
  tone(speaker, 349); delay(500);
  tone(speaker, 395); delay(500);
  tone(speaker, 440); delay(500);
  tone(speaker, 494); delay(500);
  tone(speaker, 523); delay(500);
}