---

#define BUZ_PIN 2

int notes[] = {
  261, 293, 329, 349, 392, 440, 493
};

int leds[] = {
  3, 5, 6, 9, 10, 11, 12
};

int t = 10000 / 7;

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

  for (int i = 0; i < 7; i++) {
    pinMode(leds[i], OUTPUT);
  }
}

void loop() {

  for (int i = 0; i < 7; i++) {

    int brightness = notes[i];

    tone(BUZ_PIN, notes[i]);

    digitalWrite(leds[i], HIGH);

    delay(t);

    digitalWrite(leds[i], LOW);

    noTone(BUZ_PIN);
  }
}