Joseph II, Holy Roman Emperor in the context of "Antonio Salieri"

Enlightened absolutism, also called enlightened despotism, refers to the conduct and policies of European absolute monarchs during the 18th and early 19th centuries who were influenced by the ideas of the Enlightenment, espousing them to enhance their power. The concept originated during the Enlightenment period in the 18th and into the early 19th centuries. An enlightened absolutist is a non-democratic or authoritarian leader who exercises their political power based upon the principles of the Enlightenment. Enlightened monarchs distinguished themselves from ordinary rulers by claiming to rule for their subjects' well-being. John Stuart Mill stated that despotism is a legitimate mode of government in dealing with barbarians, provided the end be their improvement.

Enlightened absolutists' beliefs about royal power were typically similar to those of regular despots, both recognizing that they were destined to rule. Enlightened rulers may have played a part in the abolition of serfdom in Europe. The enlightened despotism of Emperor Joseph II of the Holy Roman Empire is summarized as "Everything for the people, nothing by the people".

The Holy Crown of Hungary (Hungarian: Szent Korona [ˈsɛnt ˈkoronɒ], Latin: Sacra Corona), also known as the Crown of Saint Stephen, named in honour of Saint Stephen I of Hungary, was the coronation crown used by the Kingdom of Hungary for most of its existence; kings were crowned with it since the twelfth century. The Crown symbolized the King's authority over the Lands of the Hungarian Crown, and it was a key mark of legitimacy. Through the history of Hungary, more than fifty kings were crowned with it, with the last being Charles IV in 1916. The only kings not crowned were Wladyslaw I, John Sigismund Zápolya, and Joseph II.

The enamels on the crown are mainly or entirely Byzantine work, presumed to have been made in Constantinople in the 1070s. The crown was presented by the Byzantine Emperor Michael VII Doukas to the King Géza I of Hungary; both are depicted and named in the Greek language on enamel plaques in the lower crown. However, in popular tradition the Holy Crown was thought to be older and of Papal provenance, dating to the time of the first King Stephen I of Hungary crowned 1000/1001. It is one of two known Byzantine crowns to survive, the other being the slightly earlier Monomachus Crown in the Hungarian National Museum, which may have had another function. The Holy Crown has probably been remodelled using elements of different origins. The date assigned to the present configuration of the Holy Crown is most commonly put around the late 12th century. The Hungarian coronation regalia consists of the Holy Crown, the sceptre, the orb, and the mantle. The orb has the coat of arms of Charles I (1310–1342).

A wind quintet, also known as a woodwind quintet, is a group of five wind players (most commonly flute, oboe, clarinet, French horn and bassoon).

Unlike the string quartet (of 4 string instruments) with its homogeneous blend of sound color, the instruments in a wind quintet differ from each other considerably in technique, idiom, and timbre. The modern wind quintet sprang from the octet ensemble favored in the court of Joseph II in late 18th century Vienna: two oboes, two clarinets, two (natural) horns, and two bassoons. The influence of Haydn's chamber writing suggested similar possibilities for winds, and advances in the building of these instruments in that period made them more useful in small ensemble settings, leading composers to attempt smaller combinations.

The Patent of Toleration (German: Toleranzpatent, Hungarian: Türelmi rendelet) was an edict of toleration issued on 13 October 1781 by the Habsburg emperor Joseph II. Part of the Josephinist reforms, the Patent extended religious freedom to non-Catholic Christians living in the crown lands of the Habsburg monarchy, including Lutherans, Calvinists, and the Eastern Orthodox. Specifically, these members of minority faiths were now legally permitted to hold "private religious exercises" in clandestine churches.

For the first time after the Counter-Reformation, the Patent guaranteed the practice of religion by the Evangelical Lutheran and the Reformed Church in Austria. Nevertheless, worship was heavily regulated, wedding ceremonies remained reserved for the Catholic Church, and the Unity of the Brethren was still suppressed. Similar to the articular churches admitted 100 years before, Protestants were only allowed to erect 'houses of prayer' (Bethäuser) which should not in any way resemble church buildings. In many Habsburg areas, especially in the 'hereditary lands' of Upper Austria, Styria and Carinthia, Protestant parishes quickly developed, strongly relying on crypto-protestant traditions. The Patent also regulated mixed faith marriages, foreshadowing the Marriage Patent that was to be released in 1783 seeking to bring marriages under civil rather than canon law. In allowing marriages between religions, if the father was Catholic all children were required to be raised as Catholics whilst if the mother was Catholic only the daughters had to be raised as such.

The Serfdom Patent of 1 November 1781 aimed to abolish aspects of the traditional serfdom (German: Leibeigenschaft) system of the Habsburg monarchy through the establishment of basic civil liberties for the serfs.

The feudal system bound farmers to inherited pieces of land and subjected them to the absolute control of their landlord. The landlord was obligated to provide protection, in exchange for the serfs' labor and goods. The Serfdom Patent, issued by the enlightened absolutist Emperor Joseph II, diminished the long-established mastery of the landlords; thus allowing the serfs to independently choose marriage partners, pursue career choices, and move between estates.

Francis I (Francis Stephen; French: François Étienne; German: Franz Stefan; Italian: Francesco Stefano; 8 December 1708 – 18 August 1765) was Holy Roman Emperor from 1745 to 1765, Archduke of Austria from 1740 to 1765, Duke of Lorraine and Bar from 1729 to 1737, and Grand Duke of Tuscany from 1737 to 1765. He became the ruler of the Holy Roman Empire and Tuscany through his marriage to his second cousin Maria Theresa of Austria, daughter of Emperor Charles VI. Francis was the last non-Habsburg monarch of the Empire. The couple were the founders of the Habsburg-Lorraine dynasty, and their marriage produced sixteen children.

Francis was the oldest surviving son of Leopold, Duke of Lorraine, and the French princess Élisabeth Charlotte d'Orléans. Duke Leopold died in 1729 and was succeeded by his son. In 1736, Francis married Maria Theresa. In 1738, he left the Duchy of Lorraine and Bar for the deposed Polish king Stanisław Leszczyński in exchange for the Grand Duchy of Tuscany, as one of the terms ending the War of the Polish Succession. Following the death of his father-in-law, Charles VI, in 1740, Francis and Maria Theresa became the rulers of the Habsburg domains. Maria Theresa gave her husband responsibility for the empire's financial affairs, which he handled well. Francis died in 1765 and was succeeded by their son, Joseph II, who co-ruled Austria alongside Maria Theresa.

The House of Lorraine (German: Haus Lothringen) originated as a cadet branch of the House of Metz. It inherited the Duchy of Lorraine in 1473 after the death without a male heir of Nicholas I, Duke of Lorraine. By the marriage of Francis of Lorraine to Maria Theresa of Austria in 1736, and with the success in the ensuing War of the Austrian Succession (1740–1748), the House of Lorraine was joined to the House of Habsburg and became known as the House of Habsburg-Lorraine (German: Haus Habsburg-Lothringen). Francis, his sons Joseph II and Leopold II, and his grandson Francis II were the last four Holy Roman emperors from 1745 until the dissolution of the empire in 1806. The House of Habsburg-Lorraine inherited the Habsburg Empire, ruling the Austrian Empire and then Austria-Hungary until the dissolution of the monarchy in 1918.

Although its senior agnates are the dukes of Hohenberg, the house is currently headed by Karl von Habsburg (born 1961), grandson of the last emperor Charles I.

Elisabeth Christine of Brunswick-Wolfenbüttel (28 August 1691 – 21 December 1750) was Princess of Brunswick-Wolfenbuttel, Holy Roman Empress, German Queen, Queen of Bohemia and Hungary; and Archduchess of Austria, etc. by her marriage to Charles VI, Holy Roman Emperor. She was renowned for her delicate beauty and also for being the mother of Empress Maria Theresa and grandmother of Joseph II, Holy Roman Emperor, Leopold II, Holy Roman Emperor, Maria Carolina of Austria and Marie Antoinette of France. She was the longest serving Holy Roman Empress.

The Carmelite Monastery of Buda (Hungarian: Karmelita or Karmelita kolostor) is a building in the Castle Quarter of Budapest, the capital city of Hungary, that serves as the seat of the Prime Minister of Hungary. It was formerly a Carmelite Catholic monastery and theatre.

The Carmelite Order built the monastery on a parcel that had been occupied by a mosque during the Ottoman occupation of Hungary. The Order received the land in 1693 after the 1686 liberation of Buda, completed the monastery in 1736, and consecrated it in 1763. In the 1780s, Joseph II's Klostersturm forced the Carmelites to disband, and in 1786, an imperial decree converted the monastery into the Castle Theatre (Várszínház) "for the delectation of high-ranking court officials." Notable performances during the imperial era included Ludwig van Beethoven and the premiere of Bánk bán.