Kendrick Lamar (2:40 Friday, Coachella Stage): An early-afternoon main-stage spot is not exactly an enviable position for an ascendant rapper known for dense verbiage and quick-tongue delivery. But to see Kendrick live is to recognize that you're seeing a star in mid-birth. Kendrick's stage presence is fierce and intense, and his fans' devotion is absolute. This set, not too far ...