SAN FRANCISCO, Mar 18: The San Francisco Symphony on Sunday canceled an East Coast tour scheduled to begin this week at Carnegie Hall in New York, after management and the orchestra players’ union failed to reach an agreement during federally mediated contract talks. The 103 musicians have been on strike since Wednesday, prompting the cancellation of three San Francisco performances of Mahler’s Ninth Symphony. The canceled East Coast tour was scheduled to include concerts at Carnegie Hall on March 20 and the Kennedy Center in Washington on March 23. (agencies)