Katharine McPhee and David Foster threw a lavish fundraiser for L.A. mayoral candidate Spencer Pratt in their Brentwood Park backyard. One America News Network host Alicia Summers shared footage via Instagram of the event on Monday, May 13, including a snippet of Foster, 76, playing the keyboards as McPhee, 42, sang new lyrics for Tina Turner's hit "The Best." McPhee crooned that Pratt, 42, is "better than Karen Bass and Nithya Raman," his two leading opponents. At one point, McPhee seemingly forgot Raman's first name, referring to her incorrectly as "Cynthia.