Joseph Renner belongs to the late romantic school. He was a versatile composer and wrote primarily liturgical and organ music. At the organ, Renner liked to engage in harmonic experiments. Even today, his music sounds very complex, and it is the interpreter’s task to break down this complexity and make it audible in such a way that the listener does not feel lost. Tomasz Zajac solves this task with the necessary feeling for details, never losing sight of the entire work. His sound language is compact, but never pathetic or opulent. The recorded sound lacks brightness..