The score of a 1710 baroque opera based on the reign of Boris by German composer Johann Mattheson was rediscovered in Armenia and returned to Hamburg, Germany
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The score of a 1710 baroque opera based on the reign of Boris by German composer Johann Mattheson was rediscovered in Armenia and returned to Hamburg, Germany
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-21 from Wikipedia. The archived copy is preserved so this citation survives link rot.