const int c = 261;
const int d = 294;
const int e = 329;
const int f = 349;
const int g = 391;
const int gS = 415;
const int a = 440;
const int aS = 455;
const int b = 466;
const int cH = 523;
const int cSH = 554;
const int dH = 587;
const int dSH = 622;
const int eH = 659;
const int fH = 698;
const int fSH = 740;
const int gH = 784;
const int gSH = 830;
const int aH = 880;

const int buzzerPin = 12; // Digital Pin 8

int counter = 0;
int val = 0;//sets value variable to 0

void setup() {
  pinMode(buzzerPin, OUTPUT);
pinMode (13,OUTPUT);//pin 13 is the led pin and speaker
  pinMode (9, INPUT);//pin 9 reads the high signal from the PIR
}
void loop () {
val = digitalRead(9);//Pin 9 is initiallly 0
digitalWrite(13,val);//pin thirteen is equal to whatever pin 9 is
delay(100);
digitalWrite(13,LOW);//led turns off
if (val == 1){
  //Play first section
  firstSection();

  //Play second section
  secondSection();

  //Variant 1
  beep(f, 250);
  beep(gS, 500);
  beep(f, 350);
  beep(a, 125);
  beep(cH, 500);
  beep(a, 375);
  beep(cH, 125);
  beep(eH, 650);

  delay(500);

  //Repeat second section
  secondSection();

  //Variant 2
  beep(f, 250);
  beep(gS, 500);
  beep(f, 375);
  beep(cH, 125);
  beep(a, 500);
  beep(f, 375);
  beep(cH, 125);
  beep(a, 650);

  delay(650);
}

void beep(int note, int duration)
{
  //Play tone on buzzerPin
  tone(buzzerPin, note, duration);

  //Stop tone on buzzerPin
  noTone(buzzerPin);

  delay(50);

  //Increment counter
  counter++;
}

void firstSection()
{
  beep(a, 500);
  beep(a, 500);
  beep(a, 500);
  beep(f, 350);
  beep(cH, 150);
  beep(a, 500);
  beep(f, 350);
  beep(cH, 150);
  beep(a, 650);

  delay(500);

  beep(eH, 500);
  beep(eH, 500);
  beep(eH, 500);
  beep(fH, 350);
  beep(cH, 150);
  beep(gS, 500);
  beep(f, 350);
  beep(cH, 150);
  beep(a, 650);

  delay(500);
}

void secondSection()
{
  beep(aH, 500);
  beep(a, 300);
  beep(a, 150);
  beep(aH, 500);
  beep(gSH, 325);
  beep(gH, 175);
  beep(fSH, 125);
  beep(fH, 125);
  beep(fSH, 250);

  delay(325);

  beep(aS, 250);
  beep(dSH, 500);
  beep(dH, 325);
  beep(cSH, 175);
  beep(cH, 125);
  beep(b, 125);
  beep(cH, 250);

  delay(350);
}

  }
else{
  digitalWrite(12,LOW);
  }
}