In our series of organ concerts ‘Organum Imperiale’, in which the Van Peteghemorgel in the church of the Landcommanderij Alden Biesen is central, it is Johan Hermans's turn on July 18, organist of the Sint-Quintinus Cathedral in Hasselt. Together with soprano Kathleen Beliën, he provides a special musical interplay that you certainly do not want to miss.