private bool ValidateAnswer(Fret fret)
 {
     int stringZeroPosition = _doubleScale.IndexOf(fret.StringName.ToString());
     var frettedNote = _doubleScale[stringZeroPosition + fret.Position];
     return frettedNote == _requestedNote.ToString() && fret.StringName.ToString() == _requestedString;
 }
 public void FretString(Fret fret)
 {
     var isCorrectAnswer = ValidateAnswer(fret);
     CreateAnswer(isCorrectAnswer);
 }