f(x)'s latest comeback with "4 Walls" is dominating the charts!

The 4-member girl group recently released their comeback album on October 27th, along with their title track's MV, drawing attention to the change in the group's musical style since Sulli has left the group.�

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Less than a day has passed since f(x)'s release and the MV has reached over 780,000 views on Youtube and is dominating in various charts in both Korea and China.�

Meanwhile, the girls will be performing their official comeback stage on October 29 on Mnet 'M! Countdown'.