Alessandro Scarlatti was an Italian Baroque composer especially famous for his operas and chamber cantatas. He is considered the founder of the Neapolitan school of opera. He was the father of two other composers, Domenico Scarlatti and Pietro Filippo Scarlatti. Scarlatti's music forms an important link between the early Baroque Italian vocal styles of the 17th century, with their centers in Florence, Venice and Rome, and the classical school of the 18th century. Scarlatti's style, however, is more than a transitional element in Western music; like most of his Naples colleagues he shows an almost modern understanding of the psychology of modulation and also frequently makes use of the ever-changing phrase lengths so typical of the Napoli school.