In 1600 Titelouze invited the famous Franco-Flemish organ builder Crespin Carlier to Rouen to work on the cathedral organ. The result of this collaboration was referred to by contemporary critics as the best organ in France. This instrument and Carlier's later work in France defined the French classical organ. Titelouze occasionally collaborated with Carlier on various instruments. In 1604 Titelouze became a French citizen (at the time, Saint-Omer, where Titelouze was born, was part of the Spanish Netherlands). In 1610 he was appointed one of the Rouen Cathedral's canons. In 1613 he won his first award from Rouen's literary society, the Académie des Palinods, for his poems.