The Brown Eyed Girls guested on the latest episode of Mnet's 'Beatles Code', where they�showed off their impressive vocal skills. The girls picked Destiny's Child's "Emotion" as the one song they could never forget. They explained, "This is a fateful song that we first practiced when we were brought together as trainees." They also stated that since they were a vocals-focused group, they spent a lot of time practicing harmonizing with each other. The members then launched into a live rendition of "Emotion". Ga-In, Narsha, and Jea's soothing harmony left the MCs in awe, while Miryo's rap added a touch of refinement to complete the song. MC Yoon Jong Shin remarked with a thumbs up, "Everytime I hear you sing live, I'm always taken by surprise... You are so good. The best." Lee Seung Chul, who also guested on this episode, praised, "This is a team that started with a focus on vocals rather than dance. Because of this, it gives them more of a competitive edge. Later on, when 10 years, or 20 years has passed, I hope that 'Brown Eyed Girls' will be a name that's still around, and will keep on performing. Along the way, a time will come when they will have established their own turf... I saw that potential today." Check out their performance below.