FILE - In this October 1973 black and white file picture Swiss opera singer Lisa della Casa performs on stage at the Zurich Opera "Opernhaus Zuerich", Switzerland. . According to media reports on Tuesday, Dec. 11, 2012, Lisa della Casa died at the age of 93 at Muensterlingen at the Lake of Constance, Switzerland. (AP Photo/Keystone/Str,File) NO ARCHIVE
