Imperial March, with Arduino and Buzzer

int speakerPin = 8;
//buzzer conectado na porta digital 8

#define c 261
#define d 294
#define e 329
#define f 349
#define g 391
#define gS 415
#define a 440
#define aS 455
#define b 466
#define cH 523
#define cSH 554
#define dH 587
#define dSH 622
#define eH 659
#define fH 698
#define fSH 740
#define gH 784
#define gSH 830
#define aH 880
//frequencia para os tons que nós estamos usando
//usado http://home.mit.bme.hu/~bako/tonecalc/tonecalc.htm

void setup()
{
  //definir o buzzer como (saída) de áudio
  pinMode(speakerPin, OUTPUT);
}

void loop()     //rodar uma e mais uma vez
{
  march();
}

void beep (unsigned char speakerPin, int frequencyInHertz, long timeInMilliseconds)
{

    int x;
    long delayAmount = (long)(1000000/frequencyInHertz);
    long loopTime = (long)((timeInMilliseconds*1000)/(delayAmount*2));
    for (x=0;x<loopTime;x++)    {
        digitalWrite(speakerPin,HIGH);
        delayMicroseconds(delayAmount);
        digitalWrite(speakerPin,LOW);
        delayMicroseconds(delayAmount);
    }

    delay(20);
    //um pouco de delay para separar todas as notas
}

void march()
{
    beep(speakerPin, a, 500);
    beep(speakerPin, a, 500);
    beep(speakerPin, a, 500);
    beep(speakerPin, f, 350);
    beep(speakerPin, cH, 150);

    beep(speakerPin, a, 500);
    beep(speakerPin, f, 350);
    beep(speakerPin, cH, 150);
    beep(speakerPin, a, 1000);
    //first

    beep(speakerPin, eH, 500);
    beep(speakerPin, eH, 500);
    beep(speakerPin, eH, 500);
    beep(speakerPin, fH, 350);
    beep(speakerPin, cH, 150);

    beep(speakerPin, gS, 500);
    beep(speakerPin, f, 350);
    beep(speakerPin, cH, 150);
    beep(speakerPin, a, 1000);
    //second

    beep(speakerPin, aH, 500);
    beep(speakerPin, a, 350);
    beep(speakerPin, a, 150);
    beep(speakerPin, aH, 500);
    beep(speakerPin, gSH, 250);
    beep(speakerPin, gH, 250);

    beep(speakerPin, fSH, 125);
    beep(speakerPin, fH, 125);
    beep(speakerPin, fSH, 250);
    delay(250);
    beep(speakerPin, aS, 250);
    beep(speakerPin, dSH, 500);
    beep(speakerPin, dH, 250);
    beep(speakerPin, cSH, 250);
    //ficando interessante

    beep(speakerPin, cH, 125);
    beep(speakerPin, b, 125);
    beep(speakerPin, cH, 250);
    delay(250);
    beep(speakerPin, f, 125);
    beep(speakerPin, gS, 500);
    beep(speakerPin, f, 375);
    beep(speakerPin, a, 125);

    beep(speakerPin, cH, 500);
    beep(speakerPin, a, 375);
    beep(speakerPin, cH, 125);
    beep(speakerPin, eH, 1000);

    beep(speakerPin, aH, 500);
    beep(speakerPin, a, 350);
    beep(speakerPin, a, 150);
    beep(speakerPin, aH, 500);
    beep(speakerPin, gSH, 250);
    beep(speakerPin, gH, 250);

    beep(speakerPin, fSH, 125);
    beep(speakerPin, fH, 125);
    beep(speakerPin, fSH, 250);
    delay(250);
    beep(speakerPin, aS, 250);
    beep(speakerPin, dSH, 500);
    beep(speakerPin, dH, 250);
    beep(speakerPin, cSH, 250);
    //repita, repita...

    beep(speakerPin, cH, 125);
    beep(speakerPin, b, 125);
    beep(speakerPin, cH, 250);
    delay(250);
    beep(speakerPin, f, 250);
    beep(speakerPin, gS, 500);
    beep(speakerPin, f, 375);
    beep(speakerPin, cH, 125);

    beep(speakerPin, a, 500);
    beep(speakerPin, f, 375);
    beep(speakerPin, c, 125);
    beep(speakerPin, a, 1000);
    //CABOU
}