The two talented vocals displayed amazing harmony covering "That Woman" from the 'Secret Garden' OST. Ailee started the song, and Wheesung surprised everyone when he joined. The hosts and other singers all commented that it'd been a while since they've seen such an amazing duet.

Wheesung and Ailee ended up defeating Son Seung Yeon, and it was Hwang Chi Yeol (Highlight for Spoiler) who took the final win.