byte buzzerPin = 9;

 byte ledPin = 10;

 void setup(){

    pinMode(buzzerPin, OUTPUT);

 }

 void loop(){

    for (int period=15289; period >= 477; period = period/2)

        playTone(period, 200);

    fadeLed();

 }

 void playTone(int period, int duration){

    int pulse = period/2;

    for (long i=0 ; i<duration*1000L ; i+=period){

        digitalWrite(buzzerPin, HIGH);

        delayMicroseconds(pulse);

        digitalWrite(buzzerPin, LOW);

        delayMicroseconds(pulse);

    }

 }

 void fadeLed(){

    for (int brightness = 0 ; brightness < 255 ; brightness++){

        analogWrite(ledPin, brightness);

        delay(2);

   }

   for (int brightness = 255 ; brightness >= 0 ; brightness--){

        analogWrite(ledPin, brightness);

        delay(2);

   }

 }