FILE - David Foster, left, and Katharine McPhee arrive at the Vanity Fair Oscar Party on Feb. 9, 2020, in Beverly Hills, Calif. The couple, who wed in 2019, have welcomed a baby boy, McPhee's publicist confirmed Wednesday, Feb. 24, 2021. (Photo by Evan Agostini/Invision/AP, File)NEW YORK – Katharine McPhee and David Foster may want to channel their musical talents into lullabies. The couple, who wed in 2019, have welcomed a baby boy, McPhee's publicist confirmed Wednesday. She was also tapped to perform in Foster's 2008 “David Foster & Friends” concert special alongside Celine Dion, Michael Bublé, Josh Groban and Andrea Bocelli.