A cappella Pentatonix Music
A cappella (Italian for «in the manner of the church» or «in the manner of the chapel», also see gospel music and choir) music is specifically solo or group singing without instrumental sound, or a piece intended to be performed in this way. It contrasts with cantata, which is accompanied singing. A cappella was originally intended to differentiate between Renaissance polyphony and Baroque concertato style.
Carol of the Bells — Pentatonix
Pentatonix is an a cappella group of five vocalists, Scott Hoying, Kirstie Maldonado, Mitch Grassi, Avi Kaplan and Kevin Olusola, originating from Arlington, Texas. The group won the third season of The Sing-Off on November 28, 2011 broadcast on NBC, singing an a cappella arrangement of «Eye of the Tiger», originally performed by the band Survivor, as their victory song. Pentatonix won $200,000 and a recording contract with Sony. Their debut EP, PTX Vol. 1, charted at #14 on the Billboard 200 Charts and their Christmas EP, PTXmas, charted at #1 on the iTunes Holiday Albums chart. Pentatonix is touring and currently working on their next album release.