Have you ever heard a tractor orchestra? In this unusual concert, the tractor brands «Famulus», «Pionier», «Zetor» and «Belarus» are both the muses and the stars. Their engines produce a unique rhythmic piston beat. 
Sven-Åke Johansson has composed a concert specifically for these 1950s and 1960s tractors which is being performed for the first time here in Thuringia. In his search for suitable machines, the composer made great finds in Weimar and environs. Under his direction, twelve tractor drivers coax unanticipated sounds from their tractors. These are positioned in the inner courtyard of the city palace, or Stadtschloss, where the putter of their engines resounds in a concert of a very special kind. 
Sven-Åke Johansson, an influential pioneer of European free jazz and improvised music, has already composed for windmills, portable fire extinguishers and telephone books. What he found in the sound of the tractors was that moment which his music attempts to tease out: the toneless and the sound, above and beyond traditional harmony, melody and time.