An ex-SM trainee made an unexpected appearance on 'I Can See Your Voice 5'.

SEE ALSO: Complete winners list of the first D Awards

On the March 23 episode of 'I Can See Your Voice 5', singer Choi Han Wool revealed that he was formerly a trainee of SM Entertainment, back when his dream was to become an idol.

However, to everyone's surprise, Choi's current occupation was not a singer, but a shaman.

"There has been many difficulties in my life," said Choi, "I had been waiting to become an idol. But, one day, I suddenly became possessed. That was when I became a shaman instead." The MCs and the guests of the show were amazed by the drastic change in his decision and wished him luck with his current path. 

On the other hand, as a real singer of this episode, Choi Han Wool sang "Breathe", originally sung by Lee Hi and composed by the late SM Entertainment singer Jonghyun of SHINee.

Watch the clip of his performance above!