April's Chaewon and 'Produce 101's Yoon Chae Kyung released the teaser video to their collaboration track!
The teaser gives us a 30 second preview to "Clock" as well as a few new photos, and the song already sounds great. The pair's voices meld perfectly together in the ballad.
SEE ALSO: April release MV for new single 'MAYDAY'
"Clock" will be out at midnight KST on the 1st, so stay tuned!