enlistment was "Iron Mask" where he undertook the dual leading role of King Louis XIV as well as his twin brother Philippe On October 27, 2020, Cube announced that the currently active members of BtoB have formed a unit called BtoB 4U consisting Eunkwang, Minhyuk, Changsub and Peniel. The unit debuted on November 16 with their first mini-album, Inside and title track "Show Your Love". Solo Lee Changsub was the first member to debut his own solo album, "bpm 82.5", in Japan. With the title track "At The End", this Japan debut in 2017 also marked the launch of the 'Piece of BTOB' project, in which each month one BTOB member would showcase a solo release. In December 2018, he released his first Korean solo album titled "Mark". He considered it his gift to his fans before enlistment. He held his first solo concert, SPACE in January 4, 5 and 6, 2019 at the Yes24 Live Hall in Gwangjin District, Seoul. In September 6 2022, he released his solo album titled [reissue #001 'SURRENDER']. Discography Extended plays Singles As lead artist Collaborations Soundtrack appearances Filmography Television series Variety shows Hosting Web shows Theatre Musical theatre Concert 2019 Lee Changsub Solo Concert – SPACE (January 4–6, 2019) References External links Official website (korean) Cube Entertainment artists People from Suwon 1991 births Living people K-pop singers South Korean male idols South Korean male dancers BtoB (band) members 21st-century South Korean male singers