Japan’s top singer Ayumi Hamasaki announced Monday on her official website that she has lost all hearing in her left ear. She said that doctors had told her that her hearing would not return. In the statement, Hamasaki, 29, said she was diagnosed with deafness after a medical check-up last year and that the problem dates back to 2000. She says on her website: “I still want to be a vocalist. I will continue to sing and won’t give up on my fans.” Her agent said Monday she will not change her national concert tour schedule which begins in April. Her latest album, “Guilty,” went on sale on Jan 1.