Girl group KARA is once again dominating Japan with their newest release.

On March 21st, the ladies of KARA released their new double A side single album 'Speed Up/Girl's Power' in Japan.

The album sold 21,352 copies on the first day, quickly rising to #2 on the Oricon Daily chart. It sold 22,063 copies on the second day and placed 3rd.

Their title song 'Speed Up' was produced by�Mohombi who also produced Big Bang's hit track "Gara Gara GO", and it is an up-tempo electronic dance track that displays the girls' sexier appeals.

On the other hand, the slower medium tempo track "Girl's Power" was written by sweetune, and it displays the girls' classically sweet and lovely images.

The two tracks of completely contrasting musical colors have been strategically placed on the album to showcase the members' various appeals, and beginning this�April, the girls will also be embarking on their Japanese tour.

Source & Image: TVDaily via Nate