Background: Jean-Philippe Rameau (French: [Zafilip Ramo]; (1683-09-25)25 September 1683 - (1764-09-12)12 September 1764) was one of the most important French composers and music theorists of the 18th century. He replaced Jean-Baptiste Lully as the dominant composer of French opera and is also considered the leading French composer for the harpsichord of his time, alongside Francois Couperin. Little is known about Rameau's early years, and it was not until the 1720s that he won fame as a major theorist of music with his Treatise on Harmony (1722) and also in the following years as a composer of masterpieces for the harpsichord, which circulated throughout Europe.
Context: Along with Francois Couperin, Rameau is one of the two masters of the French school of harpsichord music in the 18th century. Both composers made a decisive break with the style of the first generation of harpsichordists, who confined their compositions to the relatively fixed mould of the classical suite. This reached its apogee in the first decade of the 18th century with successive collections of pieces by Louis Marchand, Gaspard Le Roux, Louis-Nicolas Clerambault, Jean-Francois Dandrieu, Elisabeth Jacquet de la Guerre, Charles Dieupart, and Nicolas Siret. Rameau and Couperin have different styles. They seem not to have known one another (Couperin was one of the official court musicians while Rameau was still an unknown; fame would only come to him after Couperin's death). Rameau published his first book of harpsichord pieces in 1706 while Couperin (who was fifteen years his senior) waited until 1713 before publishing his first "ordres." Rameau's music includes pieces in the pure tradition of the French suite: imitative ("Le rappel des oiseaux," "La poule") and character ("Les tendres plaintes", "L'entretien des Muses") pieces and works of pure virtuosity that resemble Scarlatti ("Les tourbillons," "Les trois mains") as well as pieces that reveal the experiments of a theorist and musical innovator ("L'Enharmonique", "Les Cyclopes"), which had a marked influence on Daquin, Royer, and Jacques Duphly. The suites are grouped in the traditional way, by key. Rameau's three collections appeared in 1706, 1724 and 1726 or 1727, respectively. After this, he only composed a single piece for the harpsichord: "La Dauphine" (1747). Other works, such as "Les petits marteaux," have been doubtfully attributed to him. During his semiretirement in the years 1740 to 1744, he wrote the Pieces de clavecin en concert (1741), which some musicologists consider the pinnacle of French Baroque chamber music. Adopting a formula successfully employed by Mondonville a few years earlier, these pieces differ from trio sonatas in that the harpsichord is not simply there as basso continuo to accompany other instruments (the violin, flute or viol) playing the melody but has an equal part in the "concert" with them. Rameau also claimed that the pieces would be equally satisfying as solo harpsichord works--although this statement is far from convincing, since the composer took the trouble to transcribe five of them himself--those where the lack of other instruments would show the least.
Question: When did he create instrumental works?
Answer: Rameau's three collections appeared in 1706, 1724 and 1726 or 1727, respectively.

Problem: Background: Matthew Boulton (; 3 September 1728 - 17 August 1809) was an English manufacturer and business partner of Scottish engineer James Watt. In the final quarter of the 18th century, the partnership installed hundreds of Boulton & Watt steam engines, which were a great advance on the state of the art, making possible the mechanisation of factories and mills. Boulton applied modern techniques to the minting of coins, striking millions of pieces for Britain and other countries, and supplying the Royal Mint with up-to-date equipment.
Context: The elder Boulton's business prospered after young Matthew's birth, and the family moved to the Snow Hill area of Birmingham, then a well-to-do neighbourhood of new houses. As the local grammar school was in disrepair Boulton was sent to an academy in Deritend, on the other side of Birmingham. At the age of 15 he left school, and by 17 he had invented a technique for inlaying enamels in buckles that proved so popular that the buckles were exported to France, then reimported to Britain and billed as the latest French developments. On 3 March 1749 Boulton married Mary Robinson, a distant cousin and the daughter of a successful mercer, and wealthy in her own right. They lived briefly with the bride's mother in Lichfield, and then moved to Birmingham, where the elder Matthew Boulton made his son a partner at the age of 21. Though the son signed business letters "from father and self", by the mid-1750s he was effectively running the business. The elder Boulton retired in 1757 and died in 1759. The Boultons had three daughters in the early 1750s, but all died in infancy. Mary Boulton's health deteriorated, and she died in August 1759. Not long after her death Boulton began to woo her sister Anne. Marriage with a deceased wife's sister was forbidden by ecclesiastical law, though permitted by common law. Nonetheless, they married on 25 June 1760 at St. Mary's Church, Rotherhithe. Eric Delieb, who wrote a book on Boulton's silver, with a biographical sketch, suggests that the marriage celebrant, Rev. James Penfold, an impoverished curate, was probably bribed. Boulton later advised another man who was seeking to wed his late wife's sister: "I advise you to say nothing of your intentions but to go quickly and snugly to Scotland or some obscure corner of London, suppose Wapping, and there take lodgings to make yourself a parishioner. When the month is expired and the Law fulfilled, live and be happy ... I recommend silence, secrecy, and Scotland." The union was opposed by Anne's brother Luke, who feared Boulton would control (and possibly dissipate) much of the Robinson family fortune. In 1764 Luke Robinson died, and his estate passed to his sister Anne and thus into Matthew Boulton's control. The Boultons had two children, Matthew Robinson Boulton and Anne Boulton. Matthew Robinson in turn had six children with two wives. His eldest son Matthew Piers Watt Boulton, broadly educated and also a man of science, gained some fame posthumously for his invention of the important aeronautical flight control, the aileron. As his father before him, he also had two wives and six children.
Question: What was special about his early life?
Answer:
The Boultons had three daughters in the early 1750s, but all died in infancy.