EXO's Chen talked about the time he accidentally interrupted MONSTA X's live broadcast. 

On the April 10 airing of MBC's 'Radio Star,' Chen shyly admitted, "To be honest, I have a good voice," and revealed a funny story relating to his strong vocals. 

He said, "Music show waiting rooms are not soundproof. Sometimes, idol groups have live broadcast there. My voice went into the live broadcast of the group next door as I was warming up my throat. I felt so sorry. I searched up the clip and you can really hear my voice."

Chen shared that's also the reason why he tends to speak softly.