Boris' life was dramatised by the founder of Russian literature, Alexander Pushkin, in his play "Boris Godunov" (1831), which was inspired by Shakespeare's "Henry IV". Modest Mussorgsky based his opera "Boris Godunov" on Pushkin's play. Sergei Prokofiev later wrote incidental music for Pushkin's drama. In 1997, 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. This opera, never performed during the composer's lifetime, had its world premiere in 2005 at the Boston Early Music Festival & Exhibition.