Adalbert Gyrowetz

Vojtěch Matyáš Jírovec (Adalbert Gyrowetz) (20 February 1763 – 19 March 1850) was a Bohemian composer. He mainly wrote instrumental works, with a great production of string quartets and symphonies; his operas and singspiele numbered more than 30, including ''Semiramide'' (1791), ''Der Augenarzt'' (1811), and ''Robert, oder Die Prüfung'' (1815). Provided by Wikipedia