int light = 0; //Store Light Sensor Reading
float frequency = 0; //float variable for frequency value


void setup()
{
  // Initiate Serial communication
  Serial.begin(9600);

  pinMode(9, OUTPUT);
  pinMode(A0, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:

  light = analogRead(A0); //set light to be the input from light sensor

  Serial.println(light);  //print out light value

  //map the light sensor values to a frequency value between 100 and 1000
  frequency = map(light, 120, 900, 10, 1000);

  tone(9, frequency, 100);
  tone(9, frequency, 200);
  tone(9, frequency, 300);
  tone(9, frequency, 400);
  tone(9, frequency, 500);
  tone(9, frequency, 600);
  tone(9, frequency, 700);
  tone(9, frequency, 800);
  tone(9, frequency, 900);
  tone(9, frequency, 1000);

}