The fans who loved CunninLynguists' goofier style were quickly appeased, though, with the two Strange Journey mixtape-style albums in 2009. But for their fifth proper album, it appears Kno, Deacon the Villain, and Natti are returning to the serious subject matter. As the album title indicates, Oneirology will deal with the science of dreaming, from the stages of sleep to dreaming disorders and everything in between. 　　500 special limited edition 2CD copies were pressed directly from QN5 for preorder.