SNSD, TVXQ, CNBLUE & 4minute perform at KBS’s “INPUT 2011 Seoul”

On May 11th, stars performed at the congratulatory music concert for KBS’s “INPUT 2011 Seoul“.The conference is a four-day long event that brings together representatives from around the world for discussions ranging from public television and the 21st century, to 3D-TV and the future of broadcast television.The concert was broadcasted live on the same day, and boasted a line-up of Insooni, TVXQ,