a great big world

Simplicity is key in the emotional video for the Christina Aguilera x A Great Big World duet 'Say Something.'

Singer-songwriter duo A Great Big World -- comprised of the supremely talented Chad Vaccarino and Ian Axel-- are making some serious waves. They've ended up on Christina Aguilera's radar and that's just the tip of the pop music iceberg, as they're nabbing fans left and right with their amazing compositions.

Christina Aguilera is being suuuuuuuper picky about her projects right now, and, well, she has earned that right. Singer-songwriter duo A Great Big World have found their way onto Xtina's radar with their moving single 'Say Something,' an achingly beautiful song that will be performed live by Xtina and the twosome on 'The Voice' tonight (Nov. 5).

'Say Something' is a somber, heart-wrenching song by the band A Great Big World. It's one of those songs that people seem to hear and something in the lyrics just sticks with them.

Christina Perri has new music coming our way soon, but she's still having fun covering song's she likes and sharing them on YouTube. She just posted this cover of A Great Big World's, 'Say Something'. I dig it.