Heading to Boston, conductor Andris Nelsons on rise BSO’s new maestro has come a long, long way in a very short time ← Related Article Visit The Boston Globe Share on Twitter Share on Facebook Comment on this Scroll to top of page Bill Greene/Globe Staff Conductor Andris Nelsons arrived at Symphony Hall on Tuesday, June 25 to make his Boston Symphony Orchestra musical director title official. Bill Greene/Globe Staff With Ted Kelly (left), chairman of the BSO board of trustees, and Mark Volpe, managing director of the BSO, Nelsons signed his contract to become the 15th music director. Bill Greene/Globe Staff The signing took place at the start of a whirlwind day. Pictured, Nelsons chatting with members of the BSO, trustees and members of the search committee. Essdras M Suarez/Globe Staff Nelsons was greeted outside Faneuil Hall, where he received a proclamation of "Andris Nelson's Day." Essdras M Suarez/Globe Staff At Faneuil Hall, Nelstons led a BSO brass ensemble. Winslow Townson/AP Before the Red Sox -Colorado Rockies game at Fenway Park, Nelsons said he was nervous about throwing the first pitch. Stu Rosner Red Sox great Pedro Martinez offered pitching advice. “Just don’t bounce it,” Martinez said. Winslow Townson/AP Nelsons threw the first pitch, arcing the ball a good 25 feet over the catcher and into the hands of a photographer.