ZURICH (Reuters) – Singer Tina Turner has married her long-time partner in a civil ceremony in Switzerland ahead of a Buddhist celebration at their home on the banks of Lake Zurich on Sunday. The 73-year-old "Simply the Best" singer tied the knot with German-born record producer Erwin Bach at a registry office in the Kuesnacht suburb of Zurich where they live, a municipal official said on Wednesday. "Turner had the civil ceremony a few days ago," Kuesnacht official Hannes Friess told Reuters. …