To date, he collaborated with many prominent Croatian directors, such as Branko Ištvančić (The Ghost in the Swamp, The Bridge at the End of the World), Miro Andrić (Aquatic treasures of Croatia), Miro Branković (In Search of Marko Polo), Nenad Puhovski (Together), Zoran Budak (Hebrang), Višnja Starešina (The Silenced Voice) and others, for whose films he composed music. Whilst composing film music, Grubačević very successfully combines a variety of musical genres and classical orchestration with electronic sounds and instruments.
