Since 2013 she has been director of the Coastal Academy (Akademie an der Steilkueste) in Northern Germany, focusing on efficiency, conciseness and perfection in business language and communication.
In 2000 she finished her PhD at Bonn University with a thesis on the Venetian sacred music by Claudio Monteverdi.
In 2005 she received her "Habilitation" at Frankfurt University with a handbook on women in the musical culture of the Early Modern Period.
She is member of several international research groups and interdisciplinary networks and has published widely in several fields of musicology and cultural history.
[2] Koldau documented her experiences at a later stage in her three-volume documentary novel "Jante University", which is simultaneously designed as a handbook on the general consequences of New Public Management measures for a country’s education and its economy.