Ateliers Jean Nouvel's long awaited opening of the Philharmonie de Paris concert hall took place yesterday at a VIP event in which the French President, Francois Hollande, officiated the ceremony three years after it was scheduled to take place. It has been reported that Jean Nouvel 'boycotted' the event because he feels that the building has opened "too early" and it "is not finished." He argues that "there were no acoustic tests of the concert hall [as] the schedule did not allow the architectural and technical requirements to be respected, [...] despite all the warnings which I have been giving since 2013."