Katharine McPhee reveals the hardest part of touring with husband David Foster

Katharine McPhee says the most challenging thing about being on tour with her husband, David Foster, is the pair not getting enough downtime between performances.

“We do OK, we don’t kill each other,” the singer jokes in an exclusive interview with Page Six, adding that the couple is constantly moving between their bus and hotels.

“The hard part of the tour is actually just like not sleeping very well,” she admits.

Sleeping arrangements aside, the “American Idol” alum loves performing with her legendary record producer and arranger husband.

“The joy is when we’re on stage poking fun at each other and getting to see how that night goes, and then getting on the bus to do the next city,” she tells us.

McPhee, 41, married Foster, 76, in 2019 and welcomed son, Rennie, in 2021.

She says their bond “comes from the way that we met,” which she calls “unconventional.”

The couple — who are teaming up for a 2026 tour called “An Intimate Evening with David Foster & Katharine McPhee” — met when Foster was a mentor on “American Idol.”

“So, it was a workplace [thing],” she explains, “and neither of us were looking at each other that way at all.”

McPhee says that the two were “friends for a long time” before their relationship turned romantic, and “it surprised both of us.

“That’s where the bond comes from, I think, more than anything,” she explains, noting, “It just makes it convenient that I can sing for him when he needs a demo done or something like that.”

The “Smash” alum can also be seen in “The Artist,” a murder-mystery series set during the Gilded Age, that stars Mandy Patinkin, Janet McTeer, Patti LuPone, and Hank Azaria.

In it, she plays Nora Bayes, an internationally famous vaudeville star, credited with co-writing the song “Shine On, Harvest Moon.”

McPhee says she jumped at the chance to play Bayes mainly because her old pal, producer Hilary Shor, asked.

“Hilary’s been an incredible friend and mentor to me for the last 20-something years,” she says, adding that they met at an industry dinner and Hilary “was the only person I remember from that dinner and the only person I’ve stayed in contact with.”