Cellos are lined up backstage at the Chicago Symphony Orchestra before a Nov. 8 rehearsal of Schubert’s Ninth Symphony. The CITES Rosewood regulations have made some musicians apprehensive about taking instruments containing the wood across international borders.

Cellos are lined up backstage at the Chicago Symphony Orchestra before a Nov. 8 rehearsal of Schubert’s Ninth Symphony. The CITES Rosewood regulations have made some musicians apprehensive about taking instruments containing the wood across international borders.