David Foster and Katharine McPhee's 3-Year-Old SLAYS Live Drum Performance
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Katharine McPhee is one proud mama! On TikTok, the 'American Idol' alum shared a video of her and husband David Foster's 3-year-old son, Rennie, playing the drums at the John F. Kennedy Center for the Performing Arts in Washington, D.C., alongside his dad.