The singers will include Jinusean, Kim Gun Mo, Kim Hyun Jung, So Chan Hee, Uhm Jung Hwa, Lee Jung Hyun, Jo Sung Mo, Cool, Turbo, and S.E.S! Girls' Generation Seohyun will also be making an appearance to perform alongside S.E.S. Looks like the 'Infinity Challenge' members themselves will be getting in the 90s mood as well as they dress up for the occasion.
Check out the preview of the episode above! Who are you most looking forward to seeing?