Shin Min Ah may not be a singer but she made a special guest appearance on KBS 2TV's 'Yoo Hee Yeol's Sketchbook' and mesmerized with her sweet, angelic voice!

On the December 19 episode, she appeared and did a cover of a 1995 hit song by Kang Soo Ji called "Lonely Christmas"! �Looking a bit shy and childlike, she cutely did her performance, making all the audience members fall in love with her all over again.

In her interview portion with Yoo Hee Yeol, he managed to creep her out with his "falcon gaze" and "pervert smile," taking her aback and making her laugh. �She finally said, "I feel burdened."

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He asked her how she came to appear on the show even when she was not currently active with promotions and such. �She said, "That's why I could come here feeling no burdens. �I came for my fans."

Yoo Hee Yeol continued on creeping with his gaze, saying she was pretty and unable to take his eyes off her--but who could blame him, really? �

Check out the gorgeous star's performance above as well as other artists' performances below!