Group Infinite Jang Dong-woo appeared in MBC 'King of Master Singer' and boasted the vocal ability.

In the "King of Master Singer," which was broadcast on the 25th, a masked singer's barber dropped in the second round and took off his mask. His identity was Jang Dong-woo.

"In 2018," he said, adding, "It is a horse that runs like a horse in the year of the Doggie, Infinite Jangdong."

He said, "I wanted to show that I'm rapping (on the team) but not a rapper. I heard from the judges about the limits I wanted to break. "