The opera Doktor Faust, unfinished when composer Ferruccio Busoni died, is premiered in Dresden.

Doktor Faust is an opera by Ferruccio Busoni with a German libretto by the composer, based on the myth of Faust. Busoni worked on the opera, which he intended as his masterpiece, between 1916 and 1924, but it was still incomplete at the time of his death. His pupil Philipp Jarnach finished it. More recently, in 1982, Antony Beaumont completed the opera using sketches by Busoni that were previously thought to have been lost. Nancy Chamness published an analysis of the libretto to Doktor Faust and a comparison with Goethe's version.

Ferruccio Busoni was an Italian composer, pianist, conductor, editor, writer, and teacher. His international career and reputation led him to work closely with many of the leading musicians, artists and literary figures of his time, and he was a sought-after keyboard instructor and a teacher of composition.

The Semperoper is the opera house of the Sächsische Staatsoper Dresden and the concert hall of the Staatskapelle Dresden. It is also home to the Semperoper Ballett. The building is located on the Theaterplatz near the Elbe River in the historic centre of Dresden, Germany.

May 21 is the 141st day of the year in the Gregorian calendar; 224 days remain until the end of the year.