Pentatonix, our favorite a cappella group, is back with yet another cover that has blown us away. Watch them sing a heartfelt version of "Say Something" by A Great Big World and Christina Aguilera -- it might just give you chills.
We aren't the only one to have fallen for this group. Their 2014 North American tour has already sold out, but you can still listen to more of their music here.
If you loved Pentatonix's music video for "Say Something," you might also want to check out their cover of Jesse Ware's "Valentine"!