Thank you for the question. We do not have an exact answer, especially because there are often different companies using the Concertgebouw as a venue, meaning that there are different responsible for handling the press at different occasions. However, the best we can do concerning press tickets and press information is to give you the contact information of the press responsible in the Concertgebouw.
As of know the press managar at the Concertgebouw is:
Reinoud van Houten
Title: Manager PR and Pressrelations at the Concertgebouw.
Tel. +31 (0)20 5730478
Good luck and hope you will succeed!