Yoko Watanabe.

Yoko Watanabe (渡辺 葉子, Watanabe Yōko, 1953 – July 15, 2004) was a Japanese operatic soprano who spent much of her career singing the title role of Madame Butterfly all over Europe. She was also known for her large repertoire including such works as Micaela in Carmen, Donna Elvira …