Why am I getting this error: " 'duration' was not declared in this scope "?

here code:

code: [select]


int piezo=2;
void play(int songid){
  float bpms = 315.78;
  int a=0;
  int b=0;
  int tones[]={261,294,329,349,392,440,493};
  char notenames[]={'c','d','e','f','g','a','b'};
  switch(songid){
    case 1:
    {float beat[]={1,1,2,1,1,2,1,1,1.5,0.5,4,1,1,1.5,0.5,1,1,0.5,0.5,1,1,1,1,2,2,1,1,2,1,1,2,1,1,1.5,0.5,4,1,1,1,1,1,1,1,0.5,0.5,1,1,1,1,4};
    char notes[]={'e','e','e','e','e','e','e','g','c','d','e',' ','f','f','f','f','f','e','e','e','e','e','d','d','e','d','g','f','f','f','f','f','e','e','e','e','f','f','f','f','f','e','e','e','e','f','f','f','f','f','e','e','e','e','f','f','f','f','f','e','e','e','e','g','g','f','d','c'};
    int duration= 51;
    int tempo=190;
    break;}
    case 2:
    {int beat[]={};
    char notes[]={};
    break;}
    case 3:
    {int beat[]={};
    char notes={};
    break;}
  }
  while(b<duration){
    if(notes[b] == notenames[a]){
      tone(piezo,tones[a],beat[b]*bpms);
      b++;
      a=0;
    }
    else{
      a++;
    }
  }
}
void setup{
  pinmode(piezo,output);
}
void loop{
  play(1);
}


do favor:

1.) format code (your code hard read)
2.) initialize of variables @ beginning of function definition before processing

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