Lee Moon Sae had nothing but good things to say to talented rookie Lee Hi!

She came out as a special guest for this week's episode of SBS' 'Thank You', and from the moment she appeared, Lee Moon Sae couldn't keep himself from smiling. As mentioned before, the veteran artist had mentioned the rookie's name when asked who he wanted to try working with, and commented on the show, "I think she was born with her musical talent." He added, "It's not just her voice, but I think her musical sensitivity exceeds mine."

Lee Hi then sang a bit of "Whistle" as Lee Moon Sae strummed on the guitar, obviously pleased by the rookie's ability to catch on quickly.

When Lee Hi asked him for advice saying, "A lot of people think my voice has limits. I want to make something that's definitely mine." Lee Moon Sae advised, "In the world, there are a lot of people who can sing well. The point is how sincere you are at making and singing music. Technique gets boring quickly."

Check out their performance of "Whistle" below!