On April 21, 2013, it was announced that CJ E&M signed with Jung Joon Young on April 20 and they were supposed to release his debut album at the earliest that summer of the year [REF].
It was described that he participated actively in producing his 1st Mini Album especially making N version of "병이에요 (Spotless Mind)" MV and album photos through the reality show Be Stupid [REF].