On September 8, one YouTube channel unveiled a video of U-KNOW Yunho.
The video showed U-KNOW Yunho making a singing booth with his friends at home.
He then started putting them together according to his initial design.
Soon later, the cardboard boxes became a singing booth with egg carton soundproofing.
Following his trial, he came out of the booth with a bright smile and said, "It honestly feels like I'm in one of those singing booths."
(Credit= '달라스튜디오' YouTube)
(SBS Star)