KBS Boys Over Flowers Goo Hye Sun, and Big Bang's Seungri will make an appearance on KBS Lee Hana's Peppermint and will sing a duet together. Not only is Goo Hye Sun a great actress, she also has a good voice. Which really isn't a surprise, as she was originally in YG Entertainment as a singer, prior to pursuing a career in acting. Goo Hye Sun and Seungri will be performing Kim Gun Mo's "Rain Falls on a Sleepless Night." Goo Hye Sun will also perform a remixed version of "I Don't Know Anything but Love," as seen in the latest episode. The filming of this performance will be on February 24th, so we can expect to see this very soon. Here's a video of Goo Hye Sun playing the piano and singing at home: And here's a special treat. I just had to share this selca photo, Goo Hye Sun looks absolutely gorgeous here. But then again, this just goes to prove how deceiving selca's are...