O’SIMMIE is a Brussels-born producer, DJ and founder of Gloom Club who has steadily carved out a name in the Belgian underground. His sound is rhythmic and bass-driven, shaped by South American influences and a strong sense of groove. Known for high-impact mixing and tightly built sets, O’SIMMIE creates dancefloor moments that feel intense yet controlled. His performance at Horst Festival 2024 marked a clear step forward, solidifying his reputation as a rising force within the local scene. With his roots firmly planted in Brussels and a growing presence beyond, O’SIMMIE continues to refine a style that balances percussive drive with club-focused energy. As his reach expands, he’s set on bringing that momentum to wider stages while staying true to the underground spirit that shaped him.