LOS ANGELES (AP) — Brad Arnold, the lead singer of the Grammy-nominated rock band 3 Doors Down, died Saturday, months after he announced that he had been diagnosed with Stage 4 kidney cancer. He was 47. The band said in a statement that Arnold “passed away peacefully, surrounded by loved ones, in his sleep after his courageous battle with cancer. ”3 Doors Down formed in Mississippi in 1995 and four years later received a Grammy nomination for the breakout hit “Kryptonite. ” Arnold in...