There have been press conferences and a city proclamation, a first pitch at Fenway and an outing to Faneuil Hall. At last it was time for a performance.
Many in the packed Symphony Hall audience rose to their feet on Thursday night to welcome Andris Nelsons, the BSO’s new music director designate, before a single note was played. Looking somehow both awed and poised, he acknowledged the applause with a series of bows. Among other things, this was the sound of collective relief.