public async Task <List <Song> > GetAlbumSongsAsync(string singerName, string albumName) { List <Song> songs; songs = await _dbRepo.GetAlbumSongsAsync(singerName, albumName); if (songs.Count == 0) { songs = await _lastAlbumRepo.GetAlbumSongsAsync(singerName, albumName); _dbRepo.AddSongs(songs); } return(songs); }