Idols prepared a special event for the 600th special episode of SBS's "Inkigayo." Members came together for a trot medley, including 2AM's Changmin and Jinwoon, SHINee's Key, Orange Caramel's Lizzy, SISTAR's Hyorin, and T-ara's Soyeon. Following the trot performances from the boy and girl groups, were special couple stages that especially caught the attention of viewers, as each of them showed off their talented 'variety' skills with their comical face expressions and sparkly retro outfits. Source: Newsen via Nate