The Super Junior boys will soon be holding their 6th tour 'Super Show 6'. Because Yesung, one of their best singers, will be absent due to his enlistment, it seems like Heechul is currently training to take over his parts.
He posted the above photo onto his Instagram and wrote, "I have to do Yesung's parts at the concert so I'm practicing, and my throat feels like it's going to explode. I already feel like dying because I can't sleep... I will be performing the high note of my life at
Good luck to Heechul!