On January 4, 2013 episode of Mnet's "The Voice Kids", Yoseob was inspired by a blind audition of a 12-year-old boy - Noon Yoon Hwa's cover of Big Mama's hit.
Yoon Hwa's feminine-like voice mesmerized the judges. Yang Yoseob turned his chair and was surprised, saying: "I thought it was a girl". Even Yoon Sang, another judge, said: "I thought it was a middle school girl who knows how to carry a tune."
B2ST Yoseob also added: "At the beginning, he failed to impress me, but the rest really worked, and when I turned around, it was a big surprise.”
The Voice Kids is shown both on Mnet and Tooniverse.