Comebacks are a bitch – just ask EPMD or Big Daddy Kane. But Brand Nubian, from New Rochelle, New York, have reassembled after four years in limbo with a most welcome album. The group is venerated for such hip-hop standards as 1991's "Slow Down" and 1992's "Punks Jump Up to Get Beat Down," and its messages of black pride and calls for collective responsibility within the African-American...