Nicola De Giosa (3 May 1819 – 7 July 1885) was an Italian composer and conductor active in Naples. He composed numerous operas, the most successful of which, Don Checco and Napoli di carnevale, were in the Neapolitan opera buffa genre. His other works included sacred music and art songs. His songs were particularly popular, bringing him fame as a salon composer both in Italy and abroad. De Giosa died in Bari, the city of his birth, at the age of 66. Life and career De Giosa was born in Bari to Angelantonio and Lucia (née Favia) De Giosa. He initially trained to be a flautist, first in Bari with his elder brother Giuseppe and then with Errico Daniele. Daniele recognized his talent and persuaded De Giosa's father to enroll him at the Conservatory of San Pietro a Majella in Naples. He passed the entrance examination at age 14 with sufficient merit to be awarded free tuition at the conservatory and continued his flute studies there with Pasquale Bongiorno. He also studied composition with Francesco Ruggi, Niccolò Zingarelli, and later with Gaetano Donizetti. According to contemporary accounts, he was one of Donizetti's favourite pupils. In 1839, while still a student, two of his compositions for soloists, chorus and orchestra were performed at the conservatory in honour of Count Wenzel Robert von Gallenberg who had died in March of that year. However, in 1841 he left San Pietro a Majella without completing his studies following a series of disputes with the Saverio Mercadante who succeeded Zingarelli as the conservatory's director in 1840. In 1842 De Giosa made his debut as an opera composer with the premiere of his opera buffa, La casa di tre artisti, at the Teatro Nuovo. It was well received in Naples and replicated in Turin, Genoa and Milan in 1846 under the title L'arrivo del signor zio. While it was a success with the audiences of Genoa and Turin, the Milan reception suffered from a poor production and arguments between supporters of the old Neapolitan school exemplified by De Giosa and those of the new style exemplified by Verdi whose Due Foscari was also playing in city. He produced 14 more operas between 1845 and 1882, most of which were in the opera buffa and opera semiseria genres and premiered in Naples. He also composed in the opera seria genre, but they were not nearly as successful