Question: Under which government did this Italian classical composer, conductor, and teacher that became a source of inspiration for "A Little Nightmare Music" pursue his career?

Related documents: [0]  [DOC] A Little Nightmare Music is an opera in "one irrevocable act" by Peter Schickele under the pseudonym he uses for parodies and comical works P. D. Q. Bach. The title of the work refers to the English translation of Mozart's famous "Eine kleine Nachtmusik" ("A Little Night Music"). The opera is described as being "based on a dream he had December 4, 1791, the night that Wolfgang Amadeus Mozart died and Antonio Salieri didn't." The opera was "newly exhumed" (a.k.a. premiered) at Carnegie Hall on December 27, 1982. It was later recorded with the premiere cast and released on CD by Vanguard Records in 1983. The album also includes two other works by P. D. Q. Bach: an octet (Octoot for wind instruments) and a parody of Handel's "Water Music" and "Music for the Royal Fireworks", Royal Firewater Musick. [END] 
[1]  [DOC] Antonio Salieri (] ; 18 August 17507 May 1825) was an Italian classical composer, conductor, and teacher. He was born in Legnago, south of Verona, in the Republic of Venice, and spent his adult life and career as a subject of the Habsburg Monarchy. [END]  
Answer: the Habsburg Monarchy
the Habsburg Monarchy