Singer Eru is back on the comeback trail with his new mini album, "Feel Brand New", and began promotions on today's episode of MBC's Music Core. Eru is making an effort to show the transformation from his former "Eru-style ballads" through his first title track of 2011, "Countrified and Immature". This song is a collaborative effort between hit-maker Kim Do Hoon and composer PJ, which has a lyrical main melody arranged with elements of hip-hop. This new distinctive song will show a new emotion of ballads. Also, in the beginning, the arrangement of strings and piano has upgraded both the composition and feeling for the song. The lyrics of "Countrified and Immature" were written by hit-producer Choi Gab Won and emphasize the unique and plain-spoken charm of men. "Countrified and Immature" starts with a melody that will stick to your lips even after one listen. The lyrics which speak of the search for love by a man and his nervous and bitter feelings upgrade the song yet another level. You can sense beauty and lyricism in the addictive chorus and the heart-moving orchestral tune. Check out his comeback stage below!