Fans of power pop have been watching Brendan Benson’s career since he arrived with a perfect gem of a debut in 1996 with “One Mississippi.” In a perfect world, fans say, Benson would have had a string of pop hits and by now taken his seat as the new Paul McCartney. After his disillusionment with his major label he continued to put out albums, but with a lower profile. It was his partnership with friend Jack White in The Raconteurs that brought Benson back to the national stage. And now he has returned with one of his strongest solo albums, “My Old, Familiar Friend,” packed with melodic invention, sing-along choruses, clever songs structures and a retro-’70s feel from producer Gil Norton that nods to Wings, ELO, and Todd Rundgren.