Ralf Diemert is the founder and managing director of the Berlin booking agency von der haardt. Founded in 2018, the agency focuses on working closely with artists, management, and labels to build long-term and sustainable careers. As an agent, Ralf Diemert represents internationally touring artists such as Ólafur Arnalds, Hania Rani, Kiasmos, Christian Löffler, Grandbrothers, and other protagonists of neo-classical music and live electronics. In addition to his work as an agent, Ralf Diemert also organises the German concerts of José Gonzalez, Kruder & Dorfmeister, Nicola Cruz, and Jay Jay Johanson.