LOS ANGELES  - Etta James, the influential 1950s rhythm-and-blues singer best known for her show-stopping hit “At Last,” died on Friday from complications of leukemia in a California hospital surrounded by her family. She was 73. Her death prompted tributes from numerous musicians and artists who were influenced by her singing, from pop star Mariah Carey to Aretha Franklin and legendary rock band The Doors. James died in her home town of Riverside, California, east of Los Angeles, said her manager and friend of some 30 years, Lupe De Leon. She would have turned 74 on Wednesday. “She passed away this morning. She was with her husband and her sons,” said De Leon. James was diagnosed with leukemia two years ago and had been in failing health for a number of years.