December is the season for concerts here in Korea. With the end of the year coming, Sketchbook invites some of the most talented artists to showcase music that you can only see and hear at their concerts. Popular band, Nell, melts our hearts and ears with their melodic music. Sunwoo Jung A and Ben tug at our heartstrings with their heartrending voices, and rookie rapper, Coogie, sings his newest songs and shows a different side of himself. (Source: Kocowa)