MEXICO CITY — In the hours leading up to his slaying this week, Mexican singing star Sergio Gomez had a vision of impending death, a friend said. “He told me, ‘You know what? I’m not afraid to die, and if I die it will be happy because I have taken the band to where I want it,’” said Humberto Duran, a backup singer of K-Paz de la Sierra, the band Gomez led that in just a few years has become hugely popular in both Mexico and the United States.
