I just found out this video because i am curios about Lee Mu jin and ended up fallin’ in love with this performance. I played it like thousand times a day. 😂 Hope they’ll make this duet version official. 💛
I really think that it's one of IU's best live collabs. You can see how they're enjoying the performance and at the same time complimenting each other's voices as well. More power to IU and Lee Mu Jin💕