 Complete the following phrase:  Obradovićs Concerto for Piano and Orchestra 1999 also offers a similar programmatic background. The bold musical means that fringe on atonality, especially in the tempestuous first and third movements, reinforce ideological references from the concertos subtitle Pro libertate. In the opening part, marked by tempo and character Allegro risoluto e con colera, prominent are complex clusters, which, according to the composer represent a reverberation of tumultuous micro-polyphony. In context of the 