One of Germany's most successful bands Die Toten Hosen (the Dead Trousers) took to the red carpet at the Berlinale film festival.
The punk group was formed in Düsseldorf at the beginning of the 1980s.
They've had huge success in Germany, South America and Asia.
German filmmaker Cordula Kablitz-Post has made many documentaries about international stars, including actor Mickey Rourke, Nina Hagen (a German punk singer) and Wolfgang Joop (a fashion designer).
Kablitz-Post has received several awards for her films. She teamed up with English video director Paul Dugdale, who has worked for The Prodigy, Adele, Ed Sheeran, and the Rolling Stones, to shoot the concert footage. Dugdale was nominated for a Grammy Award for his music film about Coldplay's live performances.
Kablitz-Post followed the five-member band, who are all in their mid-50s for over ten years, filming both in concert and backstage.
"Well, I wanted to show that they still really like what they do," she said. "It’s their life elixir you might think they are elderly but it’s not true at all. On stage, they have the same energy".
Our reporter Wolfgang Spindler asked: "Was she annoying with all her cameras?"
The lead singer of the punk band, Campino said: "Yes absolutely! For the cameras, we always played a happy family! No, it’s not true but, of course, with such a film project there’s a confrontation but that's when the film starts to get good."
"Exactly, it has to hurt a little otherwise nothing goes!" added Kablitz-Post.
Over the years, the band's music style has changed but their attitude is still punk.
They've sold over 19 million records and continue to thrill audiences made up of all generations and fill stadiums.
The documentary film about "Die Toten Hosen" will be released in cinemas at the end of March and the band has numerous concerts scheduled across Europe this year.