The Springfield (Missouri) Symphony has pulled its conductor from a concert this week after patrons expressed worries over SARS. “Apo Hsu, who has no symptoms of the disease, was asked to forgo her appearance at Saturday’s concert by the symphony’s board of directors. The board voted to ask principal violist Amy Muchnick to conduct instead after about 30 patrons called the symphony office about Hsu’s lengthy stay in Taiwan. Hsu returned May 10 to the United States after spending a month in Taipei.”