Untouchable made their comeback earlier this month with their 2nd mini-album and their title track Living in the Heart. The original track features the beautiful vocals of Brown Eyed Girls member Narsha, but due to her obligations to her group, Secret's Ji Eun took the stage with the hip hop duo on Music Bank! Ji Eun actually joined the hip hop duo on last week's performance as well and put on quite a show. Even though she's busy preparing for her group's comeback, she still made the time to lend her vocals to the song. http://www.youtube.com/watch?v=o4bKhKs-fog So which girl gives the song a better feel, Narsha or Ji Eun?