Modest Mussorgsky Boris Godunov was performed in the open air and for the first time in front of St. Alexander Nevsky Cathedral in Sofia. This spectacular production, also performed in front of the very same cathedral in the summer of 2014, 90 years after the building's consecration, was conceived by Plamen Kartaloff, the director of Sofia Opera and dedicated to the 100th anniversary of the birth of Boris Christoff and to the 85th anniversary of the birth of Nicolai Ghiaurov, both world-renowned for their interpretations of the role of Boris.