SBS audition program 'K-Pop Star' contestants Lee Hayi and Youn Hyensang released a special digital single "K-pop star Special No.1". The single contains a total of two tracks "For You" and "Farewell , That I Wasn't Able To See" as well as an instrumental.

"K-Pop Star" is a survival audition program, which collaborated with the "Big 3" agencies including pop sentation BoA of SM Entertainment, YG Entertainment CEO Yang Hyun Suk and the founder and producer of JYP Entertainment, Park Jin Young.

Currently, the show has 7 contestants remaining including Park Ji Min, Youn Hyen Sang, Lee Michelle, Lee Seung Hoon, Baek Ah Yeon, Lee Hayi and Park Je Hyung.