On March 23rd, singer IU guested on MBC's "Radio Star" and revealed that Yoon Sang, the composer behind her follow-up track, "The Story Only I Didn't Know", was the same age as her father. The MCs had asked her what title she called him during conversations, to which she replied, "I used to call him 'oppa' until I found out that he was born in 1968 and is the same age as my father (42). He's just a year younger than my mother!" Her castmates on the show then requested that she call them whatever title she wanted, without relevance to their age. She sweetly called out, "Heechul oppa, Gura uncle, Guk Jin uncle, and Lee Jung oppa!" To Yoon Jong Shin and Park Wan Kyu, however, she called them 'senior' respectfully, hilariously disappointing the two uncle fans. The singer also revealed her thoughts on postponing college for her career. MC Kim Heechul asked, "Why did you give up college?". She replied, "Even if I do go on to college, I didn't think I'd be able to attend classes. I want to go when I'm ready and able to learn properly." Kim Gura wondered, "Is college really a necessity?" IU agreed by replying, "I feel that way too." The other MCs laughed while commenting, "Since you're a senior in high school now, you must have a lot of time left over since you're not applying for colleges." To their amusement, Kim Gura added, "Well, isn't it nice to at least hang something up?" Source: MyDaily via Nate, Economic Star Daily News via Nate