American Idol Katharine McPhee leaves David Foster tour after "horrible" family tragedy 08/11/2023 Katharine McPhee is exiting her tour with her husband, David Foster, due to a "horrible" family tragedy. Read More RELATED NEWS Katharine McPhee leaves David Foster tour after "horrible" family tragedy'American Idol' alum Kellie Pickler's husband Kyle Jacobs dead from apparent suicideKatharine McPhee gives birth to first child with David Foster TAGS: American Idol Katharine McPhee David Foster