And Demi, and Avril Lavigne, and so on... It's a trend, basically... The trend is releasing personal, back to basics, career reviewing (if the career is long enough) albums and concerts. Ayu, Hikki, Namie, Milene Farmer, Ivete Sangalo, Jay Z, Miley Cyrus and probably more I can't think of are doing the same thing... A "personal" album with a more stripped and throwback sound that sometimes that sometimes makes reference to the artist past works and concerts based on hits and iconic performances/outfits/aesthetics.
