Hallelujah – Pentatonix (From A Pentatonix Christmas Special)

"Hallelujah" is a song performed Pentatonix (abbreviated PTX) is a five-member American a cappella group from Arlington, Texas, with vocalists Avi Kaplan, and composed by Canadian singer

Leonard Cohen, released on his album Various Positions (1984). Achieving little initial success, the 

song found greater popular acclaim through a recording by John Cale, which inspired a recording by Jeff Buckley.