Why we do this (feat. Kim Chang Yeol, Yuri & Bizniz)

In front of house (feat. SatByeol)

How do we have to (feat. Horan)

Romantic winter (feat. Kim Jin Ho)

My friend (feat. Lee Juck, KIM DONG RYUL, Psy, Gill, Ryu Si Won, Kim Won Jun & Kim Jo Han)

Romantic winter (Alpen Gondola Mix) [feat. Kim Jin Ho]