Nils Vermeulen is a Belgian double bass player active across many scenes, from free improv to jazz to contemporary classical music, and in many distinct constellations, such as his own groups Kabas and Jukwaa, a string duo with Elisabeth Klinck, and as a member of the Nemo Ensemble. As a researcher, he investigates the acoustic possibilities of the double bass, focussing mainly on strings, their vibrations, and their impact on the artistic output. He also studied instrument building and has made his own gut strings.
On his first solo album Variations, he combines highly intuitive playing with the exploration of various techniques, proportions and notes.