Canadian opera singer Ben Heppner is seen in this May 16, 1996 file photo, at the Frankfurt Ancient Opera in Germany. Heppner canceled his U.S. tour because of laryngitis, Thursday, Jan. 24, 2002. The cancellation came at the recommendation of his doctor and vocal coach, according to Carnegie Hall, where he was scheduled to sing Feb. 11.(AP Photo/Bernd Kammerer, File)