Pop rock and R&B group that started off as an independent group that performed and covered well-known songs for charitable reasons. They then released a debut digital track called "Butterfly, Find a Flower" and took off from there.
The group was originally formed under the name M.A.S 0094 (Make A Sound 0094). In June of 2017, they moved to RBW and were renamed MAS. One year later, they would re-debut as ONEWE.
The group is comprised of the five members Yonghoon, Harin, Kanghyun, Dongmyeong and CyA.