Effe Serieus is a musical act from the Netherlands associated with Dutch-language hip hop and urban pop styles. Active since the 2010s, the project blends rap and melodic vocal delivery with contemporary production that incorporates electronic beats and samples common to modern European hip hop. Their work is characterized by colloquial lyrics in Dutch, rhythmic emphasis, and an accessible, radio-friendly approach that bridges street-oriented rap aesthetics and mainstream pop sensibilities. Recordings by Effe Serieus reflect the Netherlands’ vibrant local hip hop scene and its tendency to combine local vernacular with international production trends.