Holger H. Hoos holds an Alexander von Humboldt Professorship in Methodology of Artificial Intelligence at RWTH Aachen University (Germany), as well as a professorship in machine learning at Universiteit Leiden, The Netherlands. He studied bassoon with Benedikt Manemann, Michael Held and Heiko Dechert, before deciding to pursue an academic career in computer science, where part of his work has been on topics in computer music. From his early teens, he regularly played the bassoon in orchestral settings and chamber ensembles; since 2019, he studies and plays the heckelphone. His public appearances as a heckelphonist include performances of Richard Strauss’ Alpine Symphony at the Tonhalle Zurich in November 2022 and the world premiere of Graham Waterhouse’s Perplexities after Escher as part of the Richard Strauss Festival in Garmisch-Partenkirchen in June 2024, where his recently published book “The Heckelphone: A Window into the History of Music” was also unveiled.