Kreng started as a strictly sample-based project, working with sounds from various sources: free-jazz, first generation electronics, improv, classical modernism, vintage ethnomusical fieldrecordings, etc... The project mutated into a cinematic, theatrical device that has been used by various film and theater directors. Kreng scored more that 20 theatre- & danceproductions, most of them produced by the Belgian theatre-company Abattoir Fermé.