Here is some background information on little Kaylee: She was a quiet girl in school, who usually kept to herself. She has been diagnosed with ADHD and autism, but neither of these diagnoses keeps her from following her dream. The girl found love and solace in music, and as soon as she started pursuing singing, she became a confident child — the audience loves her everywhere she goes.

So, with the presence of this singing prodigy and Pentatonix, the entire auditorium was silent, anticipating a beautiful performance that would pay homage to Leonard Cohen. As soon as the six singers begin their song, we know that they made the right choice.

Their vocals complement one another like never before. They’re singing in tune and not overpowering one another, or each others’ styles. I think that’s what makes this performance so magical — the individual singers came together and performed without having to compromise their talent and style of singing. Pentatonix and Kaylee both found a happy medium in which they can sing this song and make it one of the best renditions of “Hallelujah” ever.

Click on the link below and see the hair-raising performance for yourself.