October 27th is the official release date of their album named '4 Walls' but f(x)'s Victoria, Krystal, Luna, and Amber are here to give us a quick peek.
Showcasing some of the tracks from their album, you can check out their teaser clips below~
Cash Me Out
When I'm Alone
*Please Stay tuned for the other tracks
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♥ Preorder f(x)'s 4th album '4 Walls'