Heechul and Yoona have only 37 and 42 seconds respectively when they add up their solo parts of all their songs. Heechul sings their title song from SJ's 1st album till now- Twins, Miracle, U, DonDon, Sorry Sorry, Bonamana and Yoona sings Into the new world, Girl's generation, Kissing You, Gee, Oh! and Run Devil Run.
Before heechul sings, he said a rough estimation of how long will all the song add up to be. Instead of the 7-8 mins he said, it was only 37 seconds and that made everybody burst into laughter. Also, watch how heechul trys to stop yoona from dragging the time. Here!