void setup() {
  pinMode(2, OUTPUT); // Piezo buzzer connected to pin 2
  for (int pin = 6; pin <= 13; pin++) {
    pinMode(pin, OUTPUT); // LEDs connected to pins 6 to 13
  }
}

void loop() {
  // Define the notes for Littleroot Town theme from Pokémon
  int notes[] = {
    392, 349, 330, 349, 392, 392, 392, 392, 392,
    392, 440, 392, 349, 330, 349, 392, 349,
    392, 349, 330, 349, 392, 392, 392, 392, 392,
    392, 440, 392, 349, 330, 349, 392, 349
  };

  // Define the corresponding LEDs for visual feedback
  int leds[] = {13, 12, 11, 10, 9, 8, 7, 6,
                6, 7, 8, 6, 9, 10, 9, 6,
                7, 8, 6, 9, 10, 9, 6, 7, 6,
                7, 8, 11, 11, 8, 7, 6, 9};

  int duration = 300; // Note duration in milliseconds
  int pause = 50;     // Pause between notes

  // Play the melody and light up corresponding LEDs
  for (int i = 0; i < sizeof(notes) / sizeof(notes[0]); i++) {
    tone(2, notes[i]);
    digitalWrite(leds[i], HIGH); // Turn on corresponding LED
    delay(duration);
    noTone(2);
    digitalWrite(leds[i], LOW); // Turn off LED
    delay(pause);
  }

  delay(1000); // Delay before repeating the song
}