Here's a look at the rehearsals of Wolfgang Rihm’s Sound As Will with the Klangforum Wien. The 20-minute piece for trumpet and ensemble will be performed for the very first time at the Donaueschinger Musiktage this Saturday morning, 11:00.

In the photo: conductor Ilan Volkov, composer Wolfgang Rihm, trumpet player Marco Blaauw and members of the Klangforum Wien.

The concert will be broadcast by SWR2, listen live.