The MBC entertainment program 'Infinite Challenge' member Park Myung Soo's partner and composer Yoo Jae Hwan got up on stage when Park Myung Soo and ballad singer songwriter IU performed on stage singing Leon, a catchy dance song IU self produced.

The MBC entertainment program 'Infinite Challenge' member Park Myung Soo's partner Yoo Jae Hwan has starred on the previous two episodes leading to the 'Infinite Challenge' music festival, and has introduced himself as a hardcore IU fan, telling her that he wanted to become a singer watching IU perform.

Yoo Jae Hwan danced happily with IU and Park Myung Soo on stage singing Leon.

The MBC entertainment program 'Infinite Challenge' summer music festival performance took place in Yang Pyung, Korea, and attracted thousands of fans. The songs are available for purchase exclusively at G Market. In related news, on the most recent episode of the popular MBC entertainment program 'Infinite Challenge,' the 'Infinite Challenge' members delivered Korean food to Koreans living all over the world, including the United States, Chile, Japan and Kenya. The MBC entertainment program 'Infinite Challenge' is one of the popular, long lasting entertainment programs in Korea. It features the Infinite Challenge members Ha Ha, Park Myung Soo, Yoo Jae Suk, Jung Joon Ha, and Jung Hyung Don.