^ I believe it was one of her more successful singles. Or at least, one of her more... listened to songs?
I think it was used as the lead in for her CK5 best album as well.
http://www.oricon.co.jp/prof/artist/...ing/cd_single/
It's her 5th best selling single? haha
Anyway, I watched the What We Do video and the video totally changed what I thought the meaning of the song was lol. I thought it was about her cheating on her boyfriend who doesn't appreciate her, and what have you. I suppose it still has that meaning. They just made the video more of a girl power kinda thing haha.
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"Remember, don't let others dictate your music taste. If you like whatever you're listening to, keep listening to it."