Whether in his musical work on films, in his projects for young listeners, or in his bands and ensembles: content motivation, concept, and intermedia interplay are fundamental to Kacirek's work. The starting point for his compositions is his growing material collection of mechanical and electronic sound generators and instruments, as well as the cooperation with virtuoso allies. The result is music that oscillates with great joy between intimate minimalism, epic immersion and thrilling sonic narration.