Antal Doráti
Born in Wilhelmshaven, Hengelbrock studied the violin with Rainer Kussmaul. He started his career in Würzburg and Freiburg im Breisgau. He worked as an assistant to Witold Lutosławski, Mauricio Kagel and Antal Doráti and played with ensembles such as the Concentus Musicus Wien. In 1985, he cofounded the Freiburger Barockorchester, where he worked as a violinist and a leader of the ensemble.