David Foster loves performing with his wife ... New Jersey and Massachusetts with his spouse Katharine McPhee, 40, and David, 75, admitted performing is a nice change from being in the studio ...

David Foster and Katharine McPhee's son, Rennie ... as it was also his first time performing in the iconic arts venue. "Well, we both did it kind of for the first time together," Foster told ...

Katharine McPhee shares a video of her and David Foster's 3-year-old son, Rennie, performing at the Kennedy Center with his dad. Katharine McPhee and David Foster's toddler is taking after his ...