Mini-album title song Go busy these days, occupied by three months and chart the emerging 'sound thug' to stand out 'tubik' (2BiC) are repackaged album, Back walking] to blast heralded a new chart. Title walk back the best hit maker composers of the Republic of Korea 'Cho, Young - Su' as well as a songwriter and singer attracting attention rosseodo 'whee' is finished Together 'Authentic R & B Song' is. Tiara's I Go Crazy Because Of You and Orange Caramel's Magic Girl, Aying ? exercised over the best synergy of two people united once again finished the song walk back is a loving look back after a breakup with a lover surge not, leaving behind her the look of a man looking to put up bittersweet song. In particular, covering the entire song tubik magnificent voices with orchestra accompaniment is added to give the song a more complete power gave birth to R & B song. The repackaged album contains the title track walk back and the two existing mini-album, as well as the songs Walking Back (Acoustic ver) is listed there, as opposed to the original, acoustic grand and sweet voice is highlighted tubik will be able to feel a difference.