Utada Hikaru

One week me and my friends had cravings for Japanese food, also my friend needed to buy a few things for herself so we headed off to Japan town. After we ate and were all content from our delicious meal we started to do some shopping. While walking around I noticed that many of the stores were playing songs from one my favorite artist, Utada Hikaru. It got me thinking, are they playing these songs because they she is technically Japanese American, or because she is Japanese? Utada Hikaru was born here in America and even went to school here for her early years, but after a while she moved back to Japan. Japan does not allow dual citizenship, so I am not sure what Utada's citizen ship is. I tried to do some research, but I was not able to find out anything that would answer my question. Seeing as she has been living in Japan ever since she moved back, I guess she would have Japanese citizenship. She does however, once in a while come back to American to do a few concerts or to visit her vacation home in New York. One more thing that interests me, is that her English album has themes that many American artists sing about, which are different from her Japanese sung albums. I guess she has different inspirations for each culture she sings about.