Changsub (Lee Chang Sub)

BtoB

Changsub became a contestant on King of Masked Singer as "Mr. Wifi" in 2015. He unfortunatly lost in the 2nd round.

Changsub debuted as a main vocalist of BTOB on March 21, 2012. He also participated in lyrics composition of some tracks by BTOB including, "Last Day", "Killing Me" and "Melody"

On April 24, 2017 Changsub made his solo debut through the "Piece of BtoB" project. The song he released is called "At The End".

He later went on to record "At The End" in a Japanese format

Changsub made his musical debut just this year, he was casted in the musical adaptation of "Boys Over Flowers" as the lead, Goo Jun-pyo. He also played a role in the Korean production of the musical "Napoleon" as Lucien, Napoleon's little brother.

It was announced on November 28, 2018 that Changsub would be releasing his first Korean Solo Album in mid-December of the same year.

Changsub began his military duty by enlisting as an active duty soldier on January 14, 2019 

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, 2020 with their first mini-album, Inside and title track "Show Your Love".

On October 18, 2023 it was announced that BTOB would be separating from Cube Entertainment, it was also said that the group would be staying together. Later on November 22nd it was announced that Changsub had joined the company Fantagio.