NASHVILLE, TN - NOVEMBER 14: (FOR EDITORIAL USE ONLY) Singer Carrie Underwood speaks onstage during the 52nd annual CMA Awards at the Bridgestone Arena on November 14, 2018 in Nashville, Tennessee. (Photo by Michael Loccisano/Getty Images)

Carrie Underwood sang a very special happy birthday to her son Isaiah who just turned four years old.

With her new baby in her arms, she sucked helium out of a yellow balloon to sing in the highest pitched voice she could get.

Her husband Mike Fisher recorded the whole song and posted to his Instagram saying, “Happy birthday Isaiah????!!”

Check out Carrie’s munchkin vocals here.

Happy birthday Isaiah????!!

656 Likes, 8 Comments - Mike Fisher (@mfisher1212) on Instagram: "Happy birthday Isaiah????!!"

-Nancy Brooks