Since many years Hanna has been working together with the female vocal quartet Schola Gothia, singing early sacral music. Together they perform with the program The Divine Mystery, a project that in 2011 resulted in an album with the same title.
The gregorian singing and folk music has been sung and played for centuries and still does. In The Divine Mystery Sacred medieval chant meets saxophone improvisation. This is music that is moving you away from everyday alarms, beyond time and space.