Singer IU was a guest on the March 11th broadcast of "Yoo Hee Yeol's Sketchbook", during which she sang three songs: "Dreaming" (from "Dream High"), "I'd Do It All Again" (originally by Corinne Bailey Rae), and "The Story Only I Didn't Know" (IU's current title track). In the past, host Yoo Hee Yeol would always display nervousness and amazement towards IU. Knowing this, IU changed the lyrics of "Dreaming" to describe Yoo Hee Yeol, which made him all the more nervous! She sang, "Sharp eyes like a hawk, forehead like the Pacific Ocean, small and cute shoulders~ Established appearance from behind, a white face, with a warm way of speaking~ Did you miss me? Don't just laugh~ I know how you feel, uncle~ Even when you're coy, I know. You can fool a ghost but you can't fool me~ Step by step, nervous footsteps, with excitement~ I prepared this much today~ I missed you, uncle~" The audience applauded IU for her clever lyrics, and they burst into laughter once more after Yoo Hee Yeol asked, "Why do you call me 'uncle' and 'mister' when you call Yoon Sang 'oppa'?" Yoon Sang is the composer of "The Story Only I Didn't Know" and is 43 years old - three years older than 40-year-old Yoo Hee Yeol. IU replied, "I only found out recently that Uncle Yoo Hee Yeol is younger than Yoon Sang oppa. With his image, I can't measure Yoon Sang oppa's age." Yoo Hee Yeol revealed, "When I was in elementary school, I dreamed of becoming a musician through watching Yoon Sang-sunbae (senior)." Meanwhile, 10cm and M4 also guested alongside IU for this episode. Check out the clips of IU on 'Sketchbook' below! Source: MyStar