public Album getByArtUrl(String AlbumArtUrl) {
   return albumRepository.getByAlbumArtUrl(AlbumArtUrl);
 }
 public List<Album> getTop6() {
   return albumRepository.getTop6();
 }
 public Album getByPrice(Double price) {
   return albumRepository.getByPrice(price);
 }
 public Album getByTitle(String title) {
   return albumRepository.getByTitle(title);
 }
 public Album getAlbumById(int albumId) {
   return albumRepository.getAlbumById(albumId);
 }
 @Transactional
 public Album create(Album album) throws Exception {
   return albumRepository.persist(album);
 }
 public List<Album> getAll() {
   return albumRepository.getAll();
 }