When was the band of the extended play To Be One officially announced?
1X1=1 (To Be One): 1X1=1 (To Be One) (also known as 1×1=1 or To Be One) is the debut extended play by South Korean boy group Wanna One, a project group created through the 2017 Mnet survival show, "Produce 101 Season 2", composed of eleven trainees from different entertainment companies that will promote for 18 months under YMC Entertainment.
i don't know