The combination of Freddie Gibbs and Madlib makes no sense, which is why it makes the most sense. Gibbs comes from the burned-out and forgotten city of Gary, Indiana, and he makes snarling, unpretentious, head-down gangsta rap music. He talks about growing up amidst violence and poverty with a rare gravity, and he brings granular detail and clear bloodthirsty delight to his drug-trade stories. As a pure technical rapper, he's breathtaking. He understands the concept of flow like few others. He knows how to rattle off syllables with astonishing speed while staying in the beat's pocket and maintaining a calm, conversational presence. But Gibbs isn't an experimenter.