Twilight (트와일라잇) was a seven member South Korean boy group that was formed in 2011. Two of the members were former members of 20Star, a boy group that never made their debut. The group released their debut single, 'Without U', on August 3rd, 2011. In 2012, Sangmin, Siwoo and Zeno were replaced with Tien, Taesung and Black. Former Members; Siwan Minyeong Jaeyoon Heechun Tien Taesung Black Read more on Last.fm