f(x) 2nd mini album ‘Electric Shock’ has been released. Listen and download on iTunes & Apple Music http://itunes.apple.com/us/album/electric-shock-ep/id534866933 f(x) Official http://www.youtube.com/fxsmtown http://www.facebook.com/fx.smtown f(x) 에프엑스 ‘Electric Shock’ MV ℗ S.M.Entertainment