He tells Deutsche Welle: "When you start a three-year farewell tour, you know you've got a long time ahead of you. But that long period went by much faster than we imagined. The closer we got to the goal - Munich in December 2012 - the stronger the feeling was that we hadn't come to the end at all.

"There were so many images in our minds and so many emotions in our hearts. Everything we experienced between 2010 and 2012, the 200 concerts, it was all so powerful. You stand on stage, look down and see so many fans, including the younger generation, who are really getting into it and saying, 'Guys, this is so cool. We're seeing you for the first time. When will you be back?'