const int BPM = 60;
const double BarMsLength = 60000/BPM;

struct Note {
  int SemitoneDiff;
  int NoteType;
  double Break;
};

const int NoteCount = 60;

Note CreateNote(int SemitoneDiff, int NoteType, double Break) {
  Note RetNote;
  RetNote.SemitoneDiff = SemitoneDiff;
  RetNote.NoteType = NoteType;
  RetNote.Break = Break;
  return RetNote;
}

const Note Song[NoteCount] = {
  CreateNote(-29,1,0),
  CreateNote(-28,2,BarMsLength*4/5),
  CreateNote(-29,1,0),
  CreateNote(-28,2,BarMsLength*4/5),

  CreateNote(-29,1,0),
  CreateNote(-28,2,BarMsLength/2),
  CreateNote(-29,1,0),
  CreateNote(-28,2,BarMsLength/2),

  CreateNote(-29,2,0),
  CreateNote(-28,4,0),
  CreateNote(-29,2,0),
  CreateNote(-28,4,0),

  CreateNote(-29,4,BarMsLength/4),
  CreateNote(-28,4,BarMsLength/4),
  CreateNote(-29,4,BarMsLength/4),
  CreateNote(-28,4,BarMsLength/4),
  CreateNote(-29,4,BarMsLength/4),
  CreateNote(-28,4,BarMsLength/4),
  CreateNote(-29,4,BarMsLength/4),
  CreateNote(-28,4,BarMsLength/4),

  CreateNote(-29,8,BarMsLength/8),
  CreateNote(-28,8,BarMsLength/8),
  CreateNote(-29,8,BarMsLength/8),
  CreateNote(-28,8,BarMsLength/8),
  CreateNote(-29,8,BarMsLength/8),
  CreateNote(-28,8,BarMsLength/8),
  CreateNote(-29,8,BarMsLength/8),
  CreateNote(-28,8,BarMsLength/8),

  CreateNote(-29,8,BarMsLength/8),
  CreateNote(-28,8,BarMsLength/8),
  CreateNote(-29,8,BarMsLength/8),
  CreateNote(-28,8,BarMsLength/8),
  CreateNote(-29,8,BarMsLength/8),
  CreateNote(-28,8,BarMsLength/8),
  CreateNote(-29,8,BarMsLength/8),
  CreateNote(-28,8,BarMsLength/8),
  
  CreateNote(-29,8,BarMsLength/8),
  CreateNote(-28,8,BarMsLength/8),
  CreateNote(-31,4,0),
  CreateNote(-28,8,BarMsLength/8),
  CreateNote(-29,8,BarMsLength/8),
  CreateNote(-28,8,BarMsLength/8),
  CreateNote(-31,4,0),
  CreateNote(-28,8,BarMsLength/8),

  CreateNote(-29,8,BarMsLength/8),
  CreateNote(-28,8,BarMsLength/8),
  CreateNote(-29,8,BarMsLength/8),
  CreateNote(-28,8,BarMsLength/8),
  CreateNote(-29,8,BarMsLength/8),
  CreateNote(-28,8,BarMsLength/8),
  CreateNote(-29,8,BarMsLength/8),
  CreateNote(-28,8,BarMsLength/8),

  CreateNote(-29,8,BarMsLength/8),
  CreateNote(-28,8,BarMsLength/8),
  CreateNote(-31,4,0),
  CreateNote(-28,8,BarMsLength/8),
  CreateNote(-29,8,BarMsLength/8),
  CreateNote(-28,8,BarMsLength/8),
  CreateNote(-31,4,0),
  CreateNote(-28,8,BarMsLength/8)
};

int DelayNote(int noteType) {
  int noteDuration = BarMsLength / noteType;

  return noteDuration;
}

int NoteToFrequency(int note)
{
  return 440 * pow(2.0,note/12.0);
}

void PlayNote(int DistFromA0,int NoteType) {
  tone(3,NoteToFrequency(DistFromA0),DelayNote(NoteType));
  delay(DelayNote(NoteType));
}

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(3, OUTPUT);
   for (int i=0; i<NoteCount;i++) {
    PlayNote(Song[i].SemitoneDiff,Song[i].NoteType);
    delay(Song[i].Break);
  }
}

void loop() {}