Conversation so far:
Where did Namie Amuro tour?
Namie Amuro embarked on her Genius 2000 concert tour throughout Japan.
In what year did Namie Amuro tour in Japan?
For the first half of 2000, Namie Amuro embarked on her Genius 2000 concert tour.
What is the name of one of Namie Amuro songs?
One of the singles from Namie Amuro's album Concentration 20, Can You Celebrate?, is the best-selling single by a solo female artist in Japanese music history.
What is the name of one of Namie Amuro's albums?
Genius 2000 is the fourth studio album by Japanese recording artist Namie Amuro.
What about Namie Amuro's other albums can be named?
Play, Namie Amuro's eighth studio album, heralded a period of commercial resurgence.
When was Namie Amuro's Play album released?
Play is the eighth studio album by Japanese pop singer Namie Amuro, released on June 27, 2007 in Japan.
Is there anything else interesting about the article other than touring and album releases of Namie Amuro?
Namie Amuro has been referred to as the diva of the Heisei era and the Queen of Japanese Pop.

Question: When did she host this concert?
Self-contained rewrite: When did Namie Amuro host this Okinawa anniversary concert?