"Electric Shock" is the second studio extended play (EP) by South Korean girl group f(x). The EP was released digitally on June 10, 2012, and released physically on June 13, 2012, under S.M. Entertainment. The EP's title track, "Electric Shock", as well as the EP, reached at the top spot on the weekly Gaon Charts. The EP sold a total of more than 70,000 copies in South Korea.
The EP's single and title track, "Electric Shock", is an electronic-dance song. The lyrics starting each line with the word, "jeongichunggyeok" ("electric shock" in English). It was written and arranged by Willem Laseroms, Maarten Ten Hove and Joachim Vermeulen Windsant, and produced by Future Presidents. The music video was released on June 11, 2012, and was choreographed by Jillian Meyers.
The track "Jet" is composed by SM Entertainment's songwriter Kenzie, the track has hip-hop rhythms and electronic dance; Amber co-wrote the rap.
The track "Zig Zag" was especially produced to focus on the "youthful and refreshing blend of vocals" of f(x) members which adds to the urban electronic sound created by the use of electric guitars and drum beats. The track was composed and written by music producer Hitchhiker. The lyrics were penned by Kim Bumin who often works closely with Hitchhiker.
A jet is a stream of fluid that is projected into a surrounding medium, usually from some kind of a nozzle, aperture or orifice. Jets can travel long distances without dissipating. In the Earth's atmosphere there exist jet streams that travel thousands of kilometres.
Jet fluid has higher momentum compared to the surrounding fluid medium. In the case where the surrounding medium is assumed to be made up of the same fluid as the jet, and this fluid has a viscosity, than the surrounding fluid near the jet is assumed to be carried along with the jet by a process called entrainment.
Hayward, or "hedge warden", was an officer of an English parish dating from the Middle Ages in charge of fences and enclosures; also, a herdsman in charge of cattle and other animals grazing on common land.
The hayward was chosen by the lord of the manor or elected by the villagers to lead the sowing and harvesting, to impound stray cattle, and to supervise hedging and temporary fencing around haymeadows. The hayward's symbol of office was a horn, which he blew to give warning that cattle were invading the crops.