It's time to dance to f(x)'s electronic dance music!
Here are Victoria, Krystal, Luna, and Amber performing '4 Walls' on Music Core's November 14th episode~
Release Date: June 28, 2016
Release Date: July 5, 2016
Release Date: May 17, 2016
Buy SNSD's 'Phantasia in Japan' DVD/Blu-ray