Singer Lyn made an appearance earlier today on Yoo Hee-Yeol's Sketchbook and showed off her awesome skills. She performed SNSD / Girls' Generation Oh!, T-ara's Bo Beep, Lee Hyori's Chitty Chitty Bang Bang, T-ara's I go crazy Because of You and G-Dragon's Heartbreaker in her own unique way with acoustic guitar. What a spectacular performance, check it below!