int speakerPin = 9;  // Pin for the speaker
int buttonPin = 7;   // Pin for the button
int buttonState = 0; // Variable to store the button state

void setup() {
  pinMode(speakerPin, OUTPUT); // Set speaker pin as output
  pinMode(buttonPin, INPUT);    // Set button pin as input
}

void loop() {
  buttonState = digitalRead(buttonPin); // Read the button state
  
  if (buttonState == HIGH) { // If button is pressed
    playMelody();            // Call the function to play a melody
  } else {
    noTone(speakerPin);      // Stop the sound if button is not pressed
  }
}

void playMelody() {
  tone(speakerPin, 440, 500);  // Play A4 (440Hz) for 500ms
  delay(500);                  // Wait for the note to finish
  tone(speakerPin, 494, 500);  // Play B4 (494Hz) for 500ms
  delay(500);
  tone(speakerPin, 523, 500);  // Play C5 (523Hz) for 500ms
  delay(500);
  tone(speakerPin, 587, 500);  // Play D5 (587Hz) for 500ms
  delay(500);
  tone(speakerPin, 659, 500);  // Play E5 (659Hz) for 500ms
  delay(500);
}