f(x) "Rum Pum Pum Pum" MV reaches 4M views in 3days!

f(x) comeback single 'Rum Pum Pum Pum' Music Video reaches 4 million views on Youtube in just 3 days after it was released on July 24. Receiving explosive response from fans, f(x)'s new song is addictive and the choreography is very sleek and fun.

Watch their MV below: