int buzzer =8;

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

void loop() {
  tone(buzzer,260); delay(500);//do
  tone(buzzer,290); delay(500);//re
  tone(buzzer,330); delay(500);//mi
  tone(buzzer,340); delay(500);//fa
  tone(buzzer,360); delay(500);//sol
  tone(buzzer,440); delay(500);//la
  tone(buzzer,490); delay(500);//si
  tone(buzzer,520); delay(500);//do
}