SECRET's Ji Eun released another teaser photo from her upcoming solo album, but this time, the photo features her rapper from her title track, "Going Crazy". TS Entertainment formally introduced the rapper, who was revealed to be a trainee under their company. "Rookie rapper Bang Yong Guk will be participating in Song Ji Eun's new album.�He'll be promoting with her on music programs, so please give him your support and interest." With only a few days left until her album's release, fans have been expressing both surprise and anticipation over her 180 degree concept change. Be sure to check back with allkpop for more coverage on Song Ji Eun's album! Source: Newsen via Nate