M4M, the project group of Cube Entertainment and Chinese company Xing Tian, have released the music video for their debut song "Sadness".

As mentioned before, the group has been put together through a rigorous audition process in China, including Hong Kong and Taiwan, and has been preparing for their debut under Cube Entertainment.

Made up of Jimmy, Vinson, Bin, Alen, the group will be making their debut in Korea as well as China with "Sadness" this month.

Check out the MV below!