f(x) band member Amber’s new song, “Shake That Brass,” featuring Girls' Generation vocalist Taeyaon, was the most watched K-pop music video in the US for the month of February, acccording to YouTube data, with the clip hitting surpassing 6 million views.

Last month, Billboard columnist Jeff Benjamin heaped praise on "Shake That Brass."

"The pop art-y visual feels like a near-perfect representation of Amber's personality- known to be one of the quirkiest, and friendliest, in K-pop," Benjamin wrote on Feb. 13.

The second most viewed clip in the 50 states was 4Minute’s new song, “Crazy.” Number three was also from Amber’s new album, the title track “Beautiful.”