Sibylle studied at University College London before completing an MPhil and a PhD in History at the University of Cambridge. Her doctoral thesis examined the revival of ancient music in Victorian England (as yet unpublished!). After working at St. John’s Smith Square and in the press office at the Dresden Music Festival she joined Hazard Chase in 1998. She became an Artist Manager in 2000, working predominantly with conductors and instrumentalists. She currently assumes a more flexible role within the company as consultant in artist management, while having also taken on the role of Chief Executive of the Lockenhaus Festival.