It was the lead single of their second extended play, Electric Shock, and was released in conjunction with the EP on June 10, 2012, for digital download and streaming via SM Entertainment.
[1] "Electric Shock" is an artpop and dance-pop song, employing elements of electro house.
[2] "Electric Shock" was ranked among the best K-pop songs of 2012 by Daum Music (4th),[3] Spin (8th),[4] and Popjustice (12th).
Another minute and a half extended teaser was aired on KBS World.The music video was officially released on June 12, 2012.
In certain shots, each girl can be seen holding a specific electroshock weapon and directing it towards the camera: Krystal and Amber use tasers; Victoria and Luna use a stun baton; and Sulli uses a defibrillator.