BTOB's Changsub dropped the teaser for his '1991' comeback.
According to his official social media, Changsub is releasing a pre-release single on September 2 ahead of his comeback album. His 1st full-length album '1991' coming out this fall will be filled with his "deepened experience and emotions."
Stay tuned for updates on Changsub.
SEE ALSO: BTOB share their day in 'Please Stay' MV