const unsigned int LED_PIN = 13;
const unsigned int NOTE_MULTIPLIER = 100;

const unsigned int QUARTER_NOTE = 8;
const unsigned int EIGHTH_NOTE = 4;
const unsigned int SIXTEENTH_NOTE = 2;
const unsigned int THIRTYSECOND_NOTE = 1;

int measure0[] = {-8, -8, -8, 2, 2, 2, 2, 0};
int measure1[] = {4, 2, 2, 4, 4, 4, -4, 2, 2, 2, 2, 0};
int measure2[] = {4, 2, 2, 4, 4, 4, -4, 2, 2, 2, 2, 0};
int measure3[] = {4, 4, 4, 4, 4, 4, 4, 4, 0};
int measure4[] = {4, 2, 2, 4, 4, 4, -4, 2, 2, 2, 2, 0};
int measure5[] = {4, 2, 2, 4, 4, 4, -4, 2, 2, 2, 2, 0};
int measure6[] = {4, 2, 2, 4, 4, 4, -4, 2, 2, 2, 2, 0};
int measure7[] = {4, 4, 4, 4, 4, 4, 4, 4, 0};
int measure8[] = {4, 2, 2, 4, 4, 4, -4, 2, 2, 2, 2, 0};

int measurePop[] = {4, -4, -8, -8, -8, 0};

void playNote(int note) {
    if (note > 0) {
        digitalWrite(LED_PIN, HIGH);
        delay((NOTE_MULTIPLIER * note) / 2);
        digitalWrite(LED_PIN, LOW);
        delay((NOTE_MULTIPLIER * note) / 2);
    } else if (note < 0) {
        digitalWrite(LED_PIN, LOW);
        delay(NOTE_MULTIPLIER * (-1 * note));
    }
}


void playMeasure(int measure[]) {
    for (int i = 0;; i++) {
        int note = measure[i];
        if (note == 0) {
            return;
        }
        playNote(note);
    }
}


void setup() {
    pinMode(LED_PIN, OUTPUT);
}


void loop() {
    // int testMeasure[] = {2, 2, 2, 2, 2, -2, -2, -2, 0};
    // playMeasure(testMeasure);
    playMeasure(measure0);
    playMeasure(measure1);
    playMeasure(measure2);
    playMeasure(measure3);
    playMeasure(measure4);
    playMeasure(measure5);
    playMeasure(measure6);
    playMeasure(measure7);
    playMeasure(measure8);
    playMeasure(measurePop);
}