"Piece of BTOB Vol.1" is the first digital single by Lee Changsub of BTOB. It was released on April 24, 2017 as the first release for Piece of BTOB, a digital single project in which one member releases a solo single each month. Track list "At The End" This article is a stub. You can help Kpop Wiki by expanding it. Retrieved from "https://kpop.fandom.com/wiki/Piece_of_BTOB_Vol.1?oldid=142091" Categories: Single article stubs Singles Digital singles Lee Changsub 2017 releases 2017 digital singles Community content is available under CC-BY-SA unless otherwise noted.