Rock, pop, soul, funk, reggae: a musical Zelig reappraised Robert Palmer, who died 20 years ago, aged only 54, was a Zelig-like figure in pop history, someone whose musical life intersected with everyone from Elkie Brooks to Gary Numan, from Little Feat to Duran Duran, Chic to Talking Heads, the Meters to UB40, the Brecker Brothers to Chaka Khan. I