Singer Superfly has been chosen to sing the theme song for the drama BOSS. It is entitled My Best Of My Life and slated for a May 13 single release. However another song linked to this drama drew people's attention.

Since the broadcast of the CMs for the drama BOSS started, and since the opening song for it was revealed, messages from viewers have been pouring in at FujiTV's. People really want to know if Superfly is the one singing "that song that goes "na-na-na"", what its title is and when it will be available.

Caught short, Warner Music Japan eventually decided to meet fans' demand and immediately released the song which is entitled Alright!!. It was made available today in chaku-uta format.