At the last International Danube Festival, Lord Mayor Gunter Czisch and jazz musician Aleksandar Dujin, from Novi Sad in Serbia, gave the Ulm audience a taste of their musical skills on the Weindorf stage. In an expanded constellation - Aleksandar Dujin on piano, Nevena Reljin on vocals, Gunter Czisch on drums, Ulrich Kuhn on bass and Berthold Fischer on sax - they will once again be performing at the Weindorf this year.