Director/a
Hannes Michael Schalle
DIRECTOR/A
Reparto (por orden de créditos)
John Rhys-Davies
General Haig
Katharine McPhee
Self
Hugh Bonneville
Narrator
Kelly Clarkson
Gavin Rossdale
Josh Groban
Joss Stone
David Foster
John Debney
Randy Jackson
Rolando Villazón
Hannah Friedman
Robert Cait
Burt McMurtrie
Siedah Garrett
Anggun
Shelea Frazier
Ailee
Kevin Michael Moran
Richard Ranaghan
The Vienna Boys' Choir
Themselves
Griffith Frank
Bing Crosby
Lina Makhoul
Tony Eccles
Corporal Thomas