Hwang Chi Yeol almost burst an artery vocal training which pretty boy singer?

Singer Hwang Chi Yeol appeared on KBS 2TV's 'Happy Together 3' on January 14 and grabbed attention for revealing that he had promoted as a vocal trainer for famous celebrities in the past.

"Before I got big, my dream was to earn money and create a vocal school," he said, revealing he had wanted to give up on his dream of being a singer when he was not well known.  "At the time, I taught INFINITE, After School, Lovelyz, and more."

He continued to everyone's amusement, "I taught actor Seo Kang Jun, too.  During a lesson with Seo Kang Jun, I almost burst an artery," making everyone laugh.  Well, at least he is a super talented actor, right?