Carrie Underwood made the day of a group of elementary school students last month, and the whole thing was caught on tape.

The Andrew Jackson Elementary School Eagle Honor Choir caught Carrie’s attention when they shared a video of them performing Carrie’s hit “The Champion.” The performance was so great, the CMA Foundation asked the kids to perform at CMA Fest last month, but before they took the stage they got a surprise visit from Carrie herself.

Video shows Carrie hiding out in the wings as the students rehearse the song, with Carrie noting, “I just love listening to them.” She eventually walks out to the surprise the kids, who were definitely excited and shocked.

The video release is in conjunction with ABC’s “CMA Fest” special, which is set to air Sunday at 8 pm.