A preview of Lee Hi's surprise appearance on SBS' 'Thank You' to support veteran singer Lee Moon Sae has been unveiled.

During the preview aired at the end of April 26th's episode, Lee Hi was seen surprising the guests by suddenly appearing on set, and even singing a duet with the veteran. As mentioned before, Lee Moon Sae had named Lee Hi as a singer he'd want to try working with one day in a previous broadcast appearance, and the staff of the show decided to make it happen by bringing the talented songstress in.

Fans will have to wait until May 3rd to catch the full episode with Lee Hi's appearance. Until then, get a sneak peek at Lee Hi and Lee Moon Sae's duet through the preview below!