ISAAC HAYES HAD JUST WRAPPED A CONCERT WHEN photographer Norman Seeff shot this session for the soul legend’s 1977 album, New Horizon. “We rented a beautiful studio in San Francisco,” recalls Seeff, “and didn’t begin shooting until 1 a.m. I told him, ‘I’m concerned; you must be exhausted.’ He said, ‘No, no, I’m fine.’” Hayes sang for Seeff and his team. “Everyone was transfixed,” says Seeff. “There was an energy in the...