2006年2月22日発売 16th Single( LISMO!au LISTEN MOBILE SERVICE TVCMタイアップソング)。様々なコスプレをする宇多田ヒカルが話題に。iTunes BEST of 2006 ベストセラー・ソング。
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Utada Hikaru - Keep Tryin'
Hikki's 16th single, released on Feb. 22, 2006 (also a tie-in song for a LISMO! au LISTEN MOBILE SERVICE commercial). Hikki's colorful costumes created a lot of buzz when this was released. The song also made the iTunes BEST of 2006 list.