#include <Servo.h>
Servo myservo;
int pos = 0; 

void setup()
 {
  pinMode( 5, OUTPUT);
  pinMode( 9, OUTPUT);
  pinMode(11, OUTPUT);
  myservo.attach(9);  // attaches the servo on pin 9 to the servo object
}

void loop() {
  for (pos = 0; pos <= 180; pos += 1) { // goes from 0 degrees to 180 degrees
    // in steps of 1 degree
    analogWrite(5,pos);
    myservo.write(pos);
    tone(11,440+pos);              // tell servo to go to position in variable 'pos'
    delay(15);                       // waits 15ms for the servo to reach the position
  }
  for (pos = 180; pos >= 0; pos -= 1) { // goes from 180 degrees to 0 degrees
    analogWrite(5,pos);
    myservo.write(pos);              // tell servo to go to position in variable 'pos'
    tone(11,440+pos);
    delay(15);                       // waits 15ms for the servo to reach the position
  }
}