Press Photos by Tim Gilman 0665 Soprano soloist Sherezade Panthaki, almost shakes the foundations of Bethlehem's historic Gemeinhaus - Bethlehem's oldest building and site of the Moravian Museum where the Bach Festival's Friday afternoon Chamber Music in the Saal was held May 1. A repeat performance of selected music from John Sebastian Bach will take place this Friday during the second weekend of the 108th annual festival. Panthaki, a guest soloist of the Bach Festival Choir, and the instrumental ensemble