NAS & DAMIAN MARLEY Giants of rap and reggae find common roots in the musical family tree Scarcely a hip-hop or reggae album is released these days without a roster of guest performances by stars or hot up-and-comers, but full-length album collaborations are rare. That fact only made the prospect of teaming up for Distant Relatives, their new genre-blending album, more of an enticement for reggae singer Damian “Jr. Gong” Marley and veteran rapper...