From The Art and Popular Culture Encyclopedia
In the early years of his career, Moore's work was largely generic and had he died at this point he would likely not have been considered an Irish poet. From 1806-1807 Moore dramatically changed his style of writing and focus. Following a request by a publisher he wrote lyrics to a series of Irish tunes, in collaboration with John Stevenson, which were published in several volumes. Moore became best known for these Irish Melodies which were enormously popular containing songs such as The Minstrel Boy, The Last Rose of Summer and Oft, in the Stilly Night. Several examples of his music, such as Farewell! But Whenever You Welcome the Hour are available online.
In 1811 Moore wrote M.P., a comic opera, in collaboration with Samuel James Arnold. Although it received positive reviews Moore didn't enjoy writing for the stage and decided not to work in the medium again despite being occasionally tempted. Throughout the 1810s Moore wrote a number of political satires. After originally being a devoted supporter of the Prince of Wales, he turned against him after 1811 when he became Prince Regent and was seen to embrace the Tory government in spite of his past association with the Whigs. Another major target was the Foreign Secretary Lord Castlereagh who was repeatedly lampooned in Moore's works such as Tom Crib's Memorial to Congress which parodied the Aix-la-Chapelle diplomatic conference between Britain and her Allies portraying it as a boxing match. In 1818 Moore wrote The Fudge Family in Paris, a story in which a British family travels to experience the sights of Paris; a sequel, The Fudge Family in England, followed in 1835.
Around this time Moore also began working on a biography of the playwright and politician Richard Brinsley Sheridan, whom he met numerous times, but partly due to legal reasons it was not published until 1825.