Singing karaoke in front of a group of friends can be daunting. But what if you were doing it on an outdoor stage in front of a huge public crowd?

That is something that Berliners queue up to put themselves through every Sunday afternoon, at a stone amphitheatre in the city's Mauerpark known as the "bear pit".

The BBC's Stephen Evans went along to find out more.

The Close-up series focuses on aspects of life in countries and cities around the world. What may seem ordinary and familiar to the people who live there can be surprising to those who do not.