 Born to a family originally from Picardy that was established at Monaco in the 18th century, Langlé showed so much early promise in music that Honoré III of Monaco sent him with an endowment to Naples at the age of fifteen.There he studied harmony and counterpoint at the Conservatorio della Pietà dei Turchini under the direction of Pasquale Cafaro.He remained for more than eight years, composing Masses and motets that gained him a sufficient reputation in Italy that he was appointed to direct the city theatre of Genoa.