In a recent video posted on You Tube, Common reveals that he's already started "mentally" working on his new album, dubbed 'The Believer.' "It's up to ya'll to decide if it's better than this album or that album, but I'm going to say it's going to be one of my best albums ever," the rapper proudly claims in the video diary. The Chi-town emcee also discusses his many side projects, including upcoming children's books.