#define NOTE_D4  294
#define NOTE_E4  330
#define NOTE_F4  349
#define NOTE_G4  392
#define NOTE_A4  440
#define NOTE_A4S 466
#define NOTE_B4  494
#define NOTE_C5  523
#define NOTE_D5  587
#define NOTE_E5  659
#define NOTE_F5  698
#define NOTE_G5  784
#define NOTE_A5  880
#define NOTE_B5  988
#define NOTE_REST 0

#define BPM 120 

const int buzzer = A0; 
const int ledPins[] = {2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}; 

int melody[] = {
  NOTE_D4, NOTE_REST, NOTE_F4, NOTE_REST, NOTE_A4, NOTE_REST, NOTE_B4, NOTE_REST,
  NOTE_G4, NOTE_REST, NOTE_A4, NOTE_REST, NOTE_B4, NOTE_REST, NOTE_C5, NOTE_REST,
  NOTE_G4, NOTE_REST, NOTE_A4, NOTE_REST, NOTE_B4, NOTE_REST, NOTE_C5, NOTE_REST,
  NOTE_D5, NOTE_REST, NOTE_E5, NOTE_REST, NOTE_F5, NOTE_REST, NOTE_E5, NOTE_REST,
  NOTE_D5, NOTE_REST, NOTE_C5, NOTE_REST, NOTE_B4, NOTE_REST, NOTE_A4, NOTE_REST,
  NOTE_G4, NOTE_REST, NOTE_A4, NOTE_REST, NOTE_E4, NOTE_REST, NOTE_G4, NOTE_REST,
  NOTE_A4, NOTE_REST, NOTE_B4, NOTE_REST, NOTE_G4, NOTE_REST, NOTE_A4, NOTE_REST,
  NOTE_B4, NOTE_REST, NOTE_C5, NOTE_REST, NOTE_D5, NOTE_REST, NOTE_E5, NOTE_REST,
  NOTE_F5, NOTE_REST, NOTE_E5, NOTE_REST, NOTE_D5, NOTE_REST, NOTE_C5, NOTE_REST,
  NOTE_B4, NOTE_REST, NOTE_A4, NOTE_REST, NOTE_B4, NOTE_REST, NOTE_C5, NOTE_REST,
  NOTE_D5, NOTE_REST, NOTE_E5, NOTE_REST, NOTE_F5, NOTE_REST, NOTE_E5, NOTE_REST,
  NOTE_D5, NOTE_REST, NOTE_C5, NOTE_REST, NOTE_B4, NOTE_REST, NOTE_A4, NOTE_REST,
  NOTE_G4, NOTE_REST, NOTE_A4, NOTE_REST, NOTE_E4, NOTE_REST, NOTE_G4, NOTE_REST,
  NOTE_A4, NOTE_REST, NOTE_B4, NOTE_REST, NOTE_G4, NOTE_REST, NOTE_A4, NOTE_REST,
  NOTE_B4, NOTE_REST, NOTE_C5, NOTE_REST, NOTE_D5, NOTE_REST, NOTE_E5, NOTE_REST,
  NOTE_F5, NOTE_REST, NOTE_E5, NOTE_REST, NOTE_D5, NOTE_REST, NOTE_C5, NOTE_REST,
  NOTE_B4, NOTE_REST, NOTE_A4, NOTE_REST, NOTE_B4, NOTE_REST, NOTE_C5, NOTE_REST,
  NOTE_D5, NOTE_REST, NOTE_E5, NOTE_REST, NOTE_F5, NOTE_REST, NOTE_E5, NOTE_REST,
  NOTE_D5, NOTE_REST, NOTE_C5, NOTE_REST, NOTE_B4, NOTE_REST, NOTE_A4, NOTE_REST,
  NOTE_G4
};

int noteDurations[] = {
  8, 8, 8, 8, 8, 8, 8, 8,
  8, 8, 8, 8, 8, 8, 8, 8,
  8, 8, 8, 8, 8, 8, 8, 8,
  8, 8, 8, 8, 8, 8, 8, 8,
  8, 8, 8, 8, 8, 8, 8, 8,
  8, 8, 8, 8, 8, 8, 8, 8,
  8, 8, 8, 8, 8, 8, 8, 8,
  8, 8, 8, 8, 8, 8, 8, 8,
  8, 8, 8, 8, 8, 8, 8, 8,
  8, 8, 8, 8, 8, 8, 8, 8,
  8, 8, 8, 8, 8, 8, 8, 8,
  8, 8, 8, 8, 8, 8, 8, 8,
  8, 8, 8, 8, 8, 8, 8, 8,
  8, 8, 8, 8, 8, 8, 8, 8,
  8, 8, 8, 8, 8, 8, 8, 8,
  8, 8, 8, 8, 8, 8, 8, 8,
  8, 8, 8, 8, 8, 8, 8, 8
};

void setup() {
  
  pinMode(buzzer, OUTPUT);

  
  for (int i = 0; i < 12; i++) {
    pinMode(ledPins[i], OUTPUT);
  }
}

void loop() {
  // Iterate over the melody
  for (int i = 0; i < sizeof(melody) / sizeof(melody[0]); i++) {
    
    int duration = (60000 / BPM) / noteDurations[i];
    tone(buzzer, melody[i], duration * 0.9); 
    digitalWrite(ledPins[i % 12], HIGH);
    delay(duration * 1.1); 
    noTone(buzzer); 
    digitalWrite(ledPins[i % 12], LOW);
  }
  delay(2000); 
}