Kaylee Johnson sang Hallelujah with the a cappella group Pentatonix on Little Big Shots in 2018. She was only 11 years old at the time.

Kaylee Johnson is a singer who was asked to show off her amazing skills on Little Big Shots. The famous Irish singer took the stage with his favorite all-vocal group, Pentatonix. The talented singers Scott, Mitch, Kirstie, Kevin, and Matt make up the a cappella group Pentatonix.

They won the 2011 season of The Sing-Off on NBC. The band is known for having strong singers and songs that go to the top of the charts. The most-anticipated event of the night was Kaylee’s performance on the Little Big Shots stage. The crowd cheered as soon as she sang the first words of Leonard Cohen’s “Hallelujah.”

Kaylee, who has mild autism and ADHD and sings so well, is a calm girl in everyday life. When she sang with the choir at Killard House Special School in Northern Ireland, her teachers say, things changed. His performance on the show shows that having a rare disease shouldn’t stop someone from getting better at what they do.