Although dedicated fans create them all the time, it looks like MBC is getting on the lyric video bandwagon. 

Earlier today the network released a Korean/Romanization/English lyric video to f(x)' wildly popular "4 Walls." Rather than being psychedelic like their official MV, the lyric video is sleek and simple putting the focus on what the girls are singing and nothing else. MBC uses the previously released teaser gifs and other shots to keep the video vibrant.