Andris Nelsons led first BSO rehearsal ← Related Article Visit The Boston Globe Share on Twitter Share on Facebook Comment on this Scroll to top of page Wendy Maeda/Globe Staff After suffering a concussion that caused him to miss Tanglewood, Andris Nelsons met the Boston Symphony Orchestra Tuesday for a rehearsal. Wendy Maeda/Globe Staff This was his first rehearsal at Symphony Hall since being named the orchestra’s music director. Wendy Maeda/Globe Staff At 10:30, Nelsons, wearing a Tanglewood shirt, walked on stage, spoke of his excitement of arriving in Boston, and said, “Let’s start with Brahms.” Wendy Maeda/Globe Staff Nelsons found it hard to sit on the stool provided for him, leaping up at dramatic moments and swaying during Brahm’s “Symphony No. 3.” Wendy Maeda/Globe Staff He smiled often as he worked through the piece, which will be part of a program to be performed Thursday, Friday, and Saturday. Wendy Maeda/Globe Staff The new director had a quiet moment before rehearsal at Boston Symphony.