int buzzerPin = 8;

void setup() {
  playNote(262, 300); // C4 - Do
  playNote(294, 300); // D4 - Re
  playNote(330, 300); // E4 - Mi
  playNote(349, 300); // F4 - Fa
  playNote(392, 300); // G4 - So
  playNote(440, 300); // A4 - La
  playNote(494, 300); // B4 - Ti
  playNote(523, 500); // C5 - Do (higher)
}

void loop() {
  // Walang loop para di paulit-ulit
}

void playNote(int frequency, int duration) {
  tone(buzzerPin, frequency);
  delay(duration);
  noTone(buzzerPin); // Stop sound after duration
  delay(50);         // Short pause between notes
}