EX TEMPORE – Leipziger Improvisationsfestival für Alte Musik

In the page's words:

The Leipzig improvisation festival for early music EX TEMPORE offers uniqueand irretrievable musical experiences. Early music specialists, masters of their craft, bring music that was current 500, 400 or 300 years ago back to life and improvise in the appropriate musical language.
The EX TEMPORE festival is characterized by a relaxed, friendly, crackling atmosphere and music of the highest quality. Workshops and jam sessions round off the unique offer.