FILE - In this July 27, 1959 file picture Swiss 

FILE - In this July 27, 1959  file picture  Swiss opera singer Lisa della Casa , left, performs with Austrian singer Walter Berry during a dress rehearsal  of Wolfgang Amadeus' opera "Die Zauberfloete" ("The Magic Flute") at the Salzburger Festspiele in Salzburg, Austria.  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
Associated Press
FILE - In this July 27, 1959 file picture Swiss opera singer Lisa della Casa , left, performs with Austrian singer Walter Berry during a dress rehearsal of Wolfgang Amadeus' opera "Die Zauberfloete" ("The Magic Flute") at the Salzburger Festspiele in Salzburg, Austria. 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
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