Four members of Billlie have released a dance cover of f(x)‘s “4 Walls.” Moon Sua, Suhyeon, Haram, and Siyoon perform the song in a new video posted to the group’s official YouTube channel.
According to the post shared in r/kpop, the cover spotlights the four members in a full choreography rendition of the track. YouTube’s own metadata confirms the upload’s title, “Billlie | 4 Walls | DANCE COVER,” and that it comes from the group’s verified channel.
The Reddit thread went up less than an hour before it was flagged, making this one of the freshest uploads of the day. The post’s title names all four members involved, and the comments were still dominated by an automated subreddit census notice at the time it was picked up.
No official statement was available beyond the video itself, and the post does not mention any upcoming schedule tied to the release. The cover appears to be a standalone performance clip.
Fans can watch the full dance cover now on Billlie’s official YouTube channel, where the video is live for anyone who wants to see the group’s take on the f(x) track.
