4TEN was a South Korean girl group formed by Jungle Entertainment in 2014. The group debuted as a quartet, releasing their debut single, “Tornado”, on August 26, 2014. They followed with the digital single “Why” on January 5, 2015. In June 2015, after the departures of members TEM and Eujin, the group added Heeo, Yun, and Hajeong, briefly renaming themselves POTEN. Under this name, they released the single “Go Easy” on July 3, 2015. In early 2016, following Hajeong's departure, they reverted to the name 4TEN and released their first mini-album, Jack of All Trades, on February 23, 2016, which featured the single “Severely”. The group subsequently faced inactivity due to Yun's health issues. In late 2017, members Hyeji, Hyejin, and Heeo participated in the survival show Mix Nine. Despite a successful Makestar crowdfunding campaign for a comeback in March 2018, no new music materialized, and the group disbanded later that year.
