These photos were taken at the performance on German Unity Day, 3 October, at Berlin’s Brandeburg Gate

Daniel Müller-Schott writes: ‘Playing Bach for about 500,000 people at the Brandenburg Gate was a tremendous honour and joy – another reminder, that the fall of the Wall and the liberation from it should always be seen in our consciousness as a by no means self-evident state of society.

‘We can only be grateful for the democratic development in the past 30 years. I was also honoring my teacher, the great Russian cellist Mstislav Rostropovich, who came to play exactly those pieces by Johann Sebastian Bach right at the Berlin wall back in November 1989. Thank you, dear Slava!’

All photos ©Siemens AG. Photographer: Stefan Höderath