“I ask them to sing with me all the time but they won’t, so this is a very special occasion, because they’re very, very busy and booked and pricey,” Lopez humorously shared.

“They cost me when they come out,” she added.

Continuing with the gender-neutral pronouns, Lopez said: “They’re worth every single penny because they’re my favorite duet partner of all time. So if you would indulge me.”

Lopez and Emme then treated fans to a mesmerizing duet of Christina Perri’s A Thousand Years. Emme, sporting a hot pink shirt and shorts paired with a black hat and shoes, stole the show alongside their mom, who rocked a turquoise ensemble and a feathered robe.