Somewhere near the end of Barry Mazor’s fascinating “Blood Harmony: The Everly Brothers Story,” the long-retired and increasingly frail Phil Everly finds himself at a concert by Rosanne Cash at the ...

But the mother of all brother feuds erupted at the dawn of rock ’n’ roll with the sparring siblings Don and Phil Everly. The pair of golden-voiced heartthrobs were often at each other’s throats even ...