int BuzzerPin = 9;

 char noteNames[] = {'C','D','E','F','G','a','b','c'};

 int frequency[] = {1047,1175,1319,1397,1568,1760,1976,2093}; 

 byte noteCount = sizeof(noteNames);

 char score[] = "CCGGaaGFFEEDDC  GGFFEEDGGFFEED  CCGGaaGFFEEDDC";

 byte scoreLen = sizeof(score);

 void setup(){

 }

 void loop(){

    for (int i=0 ; i<scoreLen ; i++)

    {

         int duration = 333;

         playNote(score[i], duration);

     }

     delay(5000);

 }

 void playNote(char note, int duration){

    for (int i=0 ; i<noteCount ; i++)

    {

         if (noteNames[i] == note)

             tone(BuzzerPin, frequency[i], duration);

     }

     delay(duration);

 }