These saxophone congresses developed as get togethers of professional musicians, academics, music students and serious amateurs.  When Philippe Geiss put forward Strasbourg's offer to hold the event in 2015 he said that he wanted to extend the reach of the congress by incorporating a festival of saxophone music that would engage the less serious amateur and the general public.  Hence the name Saxopen, the range of events aimed at the man in the street, the social media presence, internet streaming etc.

Here's one example.  A group entertaining lunchers.  According to a guy who engaged me in conversation there M. Geiss's concept hit the spot.

The large crowds who queued up to get into the cathedral gig would seem to reinforce that opinion.  I got in myself last night.  It was a splendid spectacle but I wasn't entirely engaged by the music.  It started off well with the deep tones of the contra bass, grand daddy of the sax family, resounding through the building from far behind me, then the solemn procession of twenty six players along the nave who were disposed in various configurations as the piece progressed culminating as you see with most ranged on the steps leading up to the alter and a group on a high gallery behind.

There would have been no heads in the foreground by the way had it not been for the combination of a steward's shuffle, a missing husband and a woman in a wheelchair throwing a wobbly, but that's for another day.

 The music?  Ah yes. A bit too relentlessly solemn I thought.