A series of spring concerts at Powell Hall will accommodate up to 300 ticket holders. St. Louis Symphony Orchestra will perform at a reopened Powell Hall for eight weeks of concerts that begin March 26, orchestra leaders announced Tuesday. Attendance will be limited to 300 ticket holders per concert, double the number permitted for a series of concerts there in the fall. Those performances were the orchestra’s first in front of Powell Hall audiences after St. Louis officials imposed restrictions on public gatherings in the spring to keep the coronavirus from spreading. Other coronavirus safety measures will remain in place for the upcoming series, such as socially distanced seating and shorter concerts with no intermission or food and drink service.