On this day
![Opera Singer Boris Christoff: First 30 Years of Immortality]()
![Opera Singer Boris Christoff: First 30 Years of Immortality]()
Boris Christoff (BTA Photo)
site.btaOpera Singer Boris Christoff: First 30 Years of Immortality
June 28 marks the 30th anniversary of the death of Boris Christoff, Bulgaria's greatest opera singer of all times.
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