Marcha Imperial Con Pinguino!!!

Para estrenar mi nueva tarjeta pinguino he colocado algo de música.
Gracias al siguiente enlace http://yeisoneng.blogspot.com/2011/09/marcha-imperial-con-pinguino_06.html.
Hice algunas modificaciones al código para la visualización utilizando en puerto B. En mi código la salida para el parlante esta en el terminal 11.

Montaje basico se puede emplear un parlante normal de 8 ohm y el
transistor puede ser el popular 2n2222

Este es el código.

#define RunLed PORTAbits.RA4

int speakerPin = 11;

#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

#define vua 255
#define vub 127
#define vuc 63
#define vud 31
#define vue 15
#define vuf 7
#define vug 3
long delayAmount;
long loopTime;
int x;

void setup()
{
  pinMode(speakerPin, OUTPUT);
  TRISB = 0;
  //establece speakerPin como salida
}
  
void beep (unsigned char speakerPin, int frequencyInHertz, long timeInMilliseconds, int vuLed)
{
  frequencyInHertz;
  timeInMilliseconds;
    RunLed=LOW;
    PORTB = vuLed;
      
 delayAmount = (long)(1000000/frequencyInHertz);
    loopTime = (long)((timeInMilliseconds*1000)/(delayAmount*2));
    for (x=0;x<loopTime;x++)
    {
        digitalWrite(speakerPin,HIGH);
        delayMicroseconds(delayAmount);
        digitalWrite(speakerPin,LOW);
        delayMicroseconds(delayAmount);
 }
  
    RunLed=HIGH;
    PORTB = 0;
    delay(20);
    //una pequeña pausa para que las notas suenen por separado
}
  
void march()
{
    //una traducción de una partitura a frecuencia / tiempo (en milisegundos)
    //se usa 500 ms para un cuarto de nota
  
    beep(speakerPin, a, 500,vua);
    beep(speakerPin, a, 500,vua );  
    beep(speakerPin, a, 500,vua );
    beep(speakerPin, f, 350,vuf );
    beep(speakerPin, cH, 150,vuc );
  
    beep(speakerPin, a, 500,vua );
    beep(speakerPin, f, 350,vuf );
    beep(speakerPin, cH, 150,vuc );
    beep(speakerPin, a, 1000,vua );
    //first bit
  
    beep(speakerPin, eH, 500,vue );
    beep(speakerPin, eH, 500,vue );
    beep(speakerPin, eH, 500,vue );  
    beep(speakerPin, fH, 350,vuf );
    beep(speakerPin, cH, 150,vuc );
  
    beep(speakerPin, gS, 500,vug );
    beep(speakerPin, f, 350,vuf );
    beep(speakerPin, cH, 150,vuc );
    beep(speakerPin, a, 1000,vua );
    //second bit...
  
    beep(speakerPin, aH, 500,vua );
    beep(speakerPin, a, 350,vua );
    beep(speakerPin, a, 150,vua );
    beep(speakerPin, aH, 500,vua );
    beep(speakerPin, gSH, 250,vug );
    beep(speakerPin, gH, 250,vug );
  
    beep(speakerPin, fSH, 125,vuf );
    beep(speakerPin, fH, 125,vuf );  
    beep(speakerPin, fSH, 250,vuf );
    delay(250);
    beep(speakerPin, aS, 250,vua );  
    beep(speakerPin, dSH, 500,vud );
    beep(speakerPin, dH, 250,vud );
    beep(speakerPin, cSH, 250,vuc );
    //start of the interesting bit
  
    beep(speakerPin, cH, 125,vuc);
    beep(speakerPin, b, 125,vub);
    beep(speakerPin, cH, 250,vuc);    
    delay(250);
    beep(speakerPin, f, 125,vuf);
    beep(speakerPin, gS, 500,vug );
    beep(speakerPin, f, 375,vuf);
    beep(speakerPin, a, 125,vua );
  
    beep(speakerPin, cH, 500,vuc );
    beep(speakerPin, a, 375,vua );
    beep(speakerPin, cH, 125,vuc );
    beep(speakerPin, eH, 1000,vue );
  
    beep(speakerPin, aH, 500,vua );
    beep(speakerPin, a, 350,vua);
    beep(speakerPin, a, 150,vua);
    beep(speakerPin, aH, 500,vua);
    beep(speakerPin, gSH, 250,vug);
    beep(speakerPin, gH, 250,vug);
  
    beep(speakerPin, fSH, 125,vuf);
    beep(speakerPin, fH, 125,vuf);  
    beep(speakerPin, fSH, 250,vuf);
    delay(250);
    beep(speakerPin, aS, 250,vua);
    beep(speakerPin, dSH, 500,vud);
    beep(speakerPin, dH, 250,vud);
    beep(speakerPin, cSH, 250,vuc);
    //repeat... repeat
  
    beep(speakerPin, cH, 125,vuc);
    beep(speakerPin, b, 125,vub);
    beep(speakerPin, cH, 250,vuc);    
    delay(250);
    beep(speakerPin, f, 250,vuf);
    beep(speakerPin, gS, 500,vug);
    beep(speakerPin, f, 375,vuf);
    beep(speakerPin, cH, 125,vuc);
        
    beep(speakerPin, a, 500,vua);        
    beep(speakerPin, f, 375,vuf);        
    beep(speakerPin, c, 125,vuc);        
    beep(speakerPin, a, 1000,vua);    
}

void loop()  // se ejecuta una y otra vez...
{
  march();
}