Try not to scream - but - but f(x) has done it again!

They finally dropped their long-awaited MV for their comeback as four members, "4 Walls." The psychedelic MV uses a burst of interesting hues to add the dreamy effect while the song showcases a smoother, softer sound that is no less addicting than their edgy past tracks. �

It's a different style from their normal electronic-heavy songs, but it is super good. Listen above!