Girl group SISTAR is going on a music-chart hunt once again. It has only been a month since they last dominated music charts with their song "Touch My Body" and many are curious if they will once again all-kill music charts.

On August 26, SISTAR will be releasing their special album Sweet & Sour and its title song "I Swear".

In the teaser released first, the members were doing the Hawaiian dance with the sunset as their background.

"Touch My Body" had gotten the best results of all girl groups that made their comeback this summer and the song has been keeping its place on the top of music charts even though a month has passed since it was released. As they had always gotten outstanding results, inevitably bringing higher expectations to the public crowd.