April 2 (UPI) -- South Korean boy band BtoB is teasing the new single "Sorry" from three of its members.
The K-pop group shared a clip Tuesday after announcing Eunkwang, Minhyuk and Changsub will release the song Friday amid their mandatory military service.
The teaser shows lyrics for "Sorry" being written out on a sheet of paper. Minhyuk wrote the lyrics for the song, which he also helped compose.
BtoB promoted the song in a tweet Tuesday.
"(BTOB) - 'Sorry (Song by Seo Eun-kwang, Lee Min-hyuk, Lee Chang-sub)' Audio Teaser," the post reads. "2019.04.05 18:00 (KST)."
BtoB last released the EP Hour Moment in November. The mini album includes the singles "Friend" and "Beautiful Pain."