between 1999 and 2008 aster has been artistic consultant and director of productions for eurostage, a private opera producer based in amsterdam, the netherlands, which developed new opera productions in collaboration with the state operas and national theatres in bulgaria, czech republic, moldova and russia for touring throughout western europe. her productions of "madama butterfly", "don giovanni", "rigoletto", "lucia de lammermoor", and "la traviata" have been presented in theatres in the netherlands, france, germany, switzerland and england.