On September 16, some of the audience's most beloved contestants from 'Hidden Singer' season 5 returned for a battle of the champions! 

One crowd favorite to return was none other than Choi Woo Sung, the "male Lyn" who garnered attention having the same voice as singer Lyn. On this episode, Choi Woo Sung took on Lyn's hit OST from 'You Who Came From The Stars', "My Destiny"!

During the first verse, Choi Woo Sung stay behind a screen showing Lyn's photo as he delivered his perfect impersonation, his delicate voice wowing the audience. When he emerged from behind the screen, the crowd's jaws dropped once again, disbelieving the high range coming from the male singer. 

After the performance, MC Jun Hyun Moo requested an encore of the killing part from Choi Woo Sung's performance, where he sounds exactly identical to Lyn (clip below). Panelist Lim Chang Jung showered the contestant with compliments, stating, "Among singers, you would be called a 'monster'. People will want to do research on your vocal chords... You're just plain good at singing." 

Check out the mindblowing performance for yourself above!