The long wais is finally over as f(x)'s promotions for '4 Walls' has finally begun!
Starting with M Countdown, here's their comeback stage where they performed 'Diamond' and '4 Walls'~
Release Date: June 28, 2016
Release Date: July 5, 2016
Release Date: May 17, 2016
Buy SNSD's 'Phantasia in Japan' DVD/Blu-ray