public List <SingerViewModel> GetSingers()
        {
            List <SingerViewModel> singerViewModels = new List <SingerViewModel>();
            List <SingerModel>     singers          = new List <SingerModel>();

            if (useMock)
            {
                singerDaoMock = new SingerDaoMock();
                singers       = singerDaoMock.GetSingers();
            }
            else
            {
                singerDao = new SingerDao();
                singers   = singerDao.GetSingers();
            }

            foreach (SingerModel item in singers)
            {
                singerViewModels.Add(SingerMapper.ModelToViewModel(item));
            }
            return(singerViewModels);
        }