Code

#include <Servo.h>

Servo myservo;

int ServoPin = 9; //the servo signal pin
int SoundInPin = A0; //the audio in pin

void setup() {

  myservo.attach(ServoPin);
  pinMode(SoundInPin, INPUT);

}

void loop() {
int intensity = analogRead(SoundInPin);

intensity = map(sensorValue,0,60,0,180); //change the x in the            intensity = map(sensorValue,0,x,0,180);       //it is used for sensitivity
intensity = sensorValue *1.25; //change the y in the                      intensity = sensorValue *y                    //the biggest the number is the more will the nutcracker open its mouth
myservo.write(0);

int MoveDelayValue = map(sensorValue,0,255,0,sensorValue);

if (sensorValue > 33) {
   delay(1);
   myservo.write(sensorValue);
   delay(MoveDelayValue);
}

}