Hein van de Geyn is a renowned jazz double bassist, composer, and bandleader hailing from the Netherlands. Born on July 18, 1956, in Schijndel, van de Geyn has made a significant impact on the jazz scene both as a performer and an educator. He is the co-founder of the Challenge Jazz label and leads his own band, Baseline, showcasing his versatility and musical prowess. Beyond his performances, van de Geyn is also a dedicated teacher, sharing his expertise through educational materials and his role at the eAr Academy. His work as a composer and producer further enriches the jazz landscape, making him a multifaceted artist whose contributions span performance, education, and production.