On the May 4 episode, Highlight joined as the guest and gave a shot in finding the talented singers. Among the contestants was a young duo who claimed they're talented artists from 'Voice Kids'.�

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While in the debate about their identity, Yoseob�commented that he thinks one of them was his student on 'Voice Kids'.�It turned out that Yoseob was correct because one of them is Sa Kang-- the singer Yoseob taught on the past show!

Watch Yoseob and Sa Kang's reunion and their amazing performance together in the clip!