After meeting the Pope, they say they're only more inspired to keep spreading their music worldwide.
This year the concert will feature Spanish artist José Carreras and Amy Lee of the rock band Evanescence.
In her portraits, Tsarkova tries to give a little window into the lives of the popes.
Each year at Christmas, the Vatican selects a country to create a Nativity scene to be displayed in the Paul VI Audience Hall. This year it comes from Guatemala.
