Most of today's gold-plated R&B stars are ideally suited to economic boom times. Anthony Hamilton is a down-home sort: a man to help you muddle through a recession. "We don't have to worry 'bout no groceries/We can fill up on love alone," he sings on "Cool," from his sixth album. The least flashy of the neosoul singers that emerged in the Nineties, Hamilton still has a Seventies jones (check out...