Group f(x), who is currently performing their new song, "Rum Pum Pum Pum," has topped the on and offline charts.

f(x) recently released their new album on July 29 and ranked number 1 on 8 different music sites including Melon, Olleh Music, Bugs, Naver Music and more. 

Their album, Pink Tape, also topped the album sales site, Han Teo, for the week of July 29-August 4. These quick high rankings proved f(x)'s popularity.

Also, with many male idol groups comebacks, f(x) was still able to beat these groups for the number 1 spot on these music charts, making these wins even more memorable.

Their new song, "Rum Pum Pum Pum," features an ethnic guitar sound and a funky rhythm for a fun pop dance song. They also worked with world famous choreographers to create a more appealing dance performance as well.