Formed by as many as thirteen members, this is the orchestra's third largest group. Led by Karel Prochazka and Karel Plocek, respectively the group's leader and its deputy leader, the section also has eleven regular members: Petr Psenica, Emil Machain, Petr Pilat, Tomas Kulik, Milan Hobza, Jan Kuchar, Zbynek Volf, Martin Heller, Frantisek Kocis, Otakar Salajka, and David Slechta.