Red Light is the third studio album by South Korean girl group f(x), released on July 7, 2014, by SM Entertainment and Genie Music. It reached number one on the Gaon Album Chart and had two promotional singles, "Red Light" and "Milk". This is the last album with Sulli, who left the group one year after its release.
Digital and "Wild Cats" version cover
f(x) (; Korean: 에프엑스; RR: Epeuekseu) is a South Korean girl group, consisting of Victoria, Amber, Luna, Krystal, and previously Sulli until her departure from the group in August 2015. Formed by SM, f(x) officially debuted in September 2009 with the release of the digital single "La Cha Ta".
f(x) performing at Jeju K-pop Festival in October 2015 From left to right: Victoria, Krystal, Amber, and Luna
f(x) with Girls' Generation at a showcase for the LG Chocolate cellphone
f(x) in December 2011
F(x) performing as a four-piece group in Trafalgar Square, in August 2015.