What was the world 's 5th - best selling single of 2012 ?
World 's Best Selling American Artist : Lady Gaga World 's Best Selling Australian Artist : Empire of the Sun World 's Best Selling British Artist : Susan Boyle World 's Best Selling Canadian Artist : Celine Dion World 's Best Selling German Artist : Rammstein World 's Best Selling Irish Artist : U2 World 's Best Selling Italian Artist : Tiziano Ferro World 's Best Selling Latin American Artist : Shakira World 's Best Selling Middle Eastern Artist : Elissa World 's Best Selling Scandinavian Artist : A-Ha World 's Best Selling Spanish Artist : Mónica Naranjo