The Backstreet Boys members AJ McLean, Nick Carter, Howie Dorough and Brian Littrell performed three songs onstage to promote their upcoming album ‘Unbreakable’ at the Potsdamer Platz Arkaden on Wednesday (October 10) in Berlin, Germany. Check out pictures from GettyImages. Watch their performances of ‘Inconsolable’, ‘I Want It That Way’, and ‘Shape Of My Heart’ at YouTube.