Fête de la Musique Erfurt

In the organizer's words:

Every year on June 21 - the beginning of summer - music lovers of all styles come together in 540 cities around the world for free concerts by amateur and professional musicians.

First celebrated in Paris in 1982, the festival came to Erfurt in 2010 and has enjoyed great popularity ever since. Musicians and bands from various genres perform and present their music at many venues and stages throughout the city center.

The whole city sounds lively and welcomes the summer!

You can find more information here.