On the set of "Infinite Challenge" music festival, singer Defconn, Kim Jo Han, and rapper Gaeko showed up as surprise guests and performed on stage.

"Infinite Challenge" music festival, which took place on October 17 in Kyungkido Paju Injingak's Nuri Peace Park, surprise guests took up the stage in addition to the seven teams of the original "Infinite Challenge" members and celebrities

Defconn joined G Dragon and Jung Hyung Don's performance wearing dove's wings, which reminded the audience of his nickname, "Hip Hop Dove." Gaeko joined Primary and Park Myung Soo's performance with rap. R&B singer Kim Jo Han joined Yoo Hee Yeol and Yu Jae Suk's performance.

"Infinity Challenge" hosts music festivals every other year. Starting from the roadside music festival in 2007, Olympic road music festival in 2009 and West coast expressway music festival in 2011 have garnered much attention.

Celebrities such as Yoo Hee Yul, Kim C, BoA, and G Dragon of Big Bang participated. 100% of the profit from the festival is to be donated to charity.