WIKIPEDIA:

“ is a Japanese singer-songwriter, record producer, model, lyricist, and actress. Also called "Ayu" by her fans, Hamasaki has been dubbed the "Empress of Pop" because of her popularity and widespread influence in Japan and throughout Asia. Born and raised in Fukuoka, she moved to Tokyo at fourteen to pursue a career in entertainment. In 1998, under the tutelage of Avex CEO Max Matsuura, she released a string of modestly selling singles that concluded with her 1999 debut album A Song for ××. The album debuted atop the Oricon charts and stayed there for four weeks, establishing her popularity in Japan.
Hamasaki's constantly changing image and tight control over her artistry has helped her popularity extend across Asia; music and fashion trends she has started have spread to countries such as China, Singapore, and Southeast Asia. She has appeared in or lent her songs to many advertisements and television commercials. Though she originally supported the exploitation of her popularity for commercial purposes, she later reconsidered and eventually opposed her status as an Avex "product".
Since her 1998 debut with the single "Poker Face", Hamasaki has sold over 50 million records in Japan, making her the best selling solo [......] ”

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