Scarlatti, Alessandro, 1660-1725, Italian composer. He may have studied with Carissimi in Rome, where his first opera was produced in 1679. In 1684 he went to Naples as master of the royal chapel and there composed operas for the royal palace and chamber music for the aristocracy. Later he was also active in Florence, Rome, and Venice. He wrote more than 100 operas, of which Mitridate Eupatore (1707) and Il Tigrane (1715) are considered the finest. As a leader of the Neapolitan school, he helped establish the conventions of the opera seria, perfecting the aria da capo and the three-part overture. His church music includes motets and masses; he also wrote serenades and madrigals, and he composed almost 700 chamber cantatas, which represent the highest development of his art.

His son, (Giuseppe) Domenico Scarlatti, 1685-1757, was a harpsichord virtuoso and composer. As a young man he is said to have engaged in friendly keyboard competition with his contemporary Handel, and thereafter the two had lifelong admiration for each other. From 1709 to 1714, Scarlatti was composer to the Polish Queen Maria Casimira in her court at Rome, and then for a time he was chapel master of St. Peter's. About 1719 he went to Lisbon as music master of the royal chapel and teacher of the Princess Maria Barbara. He accompanied her to Madrid in 1729, and spent the rest of his life at the Spanish court. Scarlatti wrote operas, oratorios, and cantatas, but his fame rests chiefly on his keyboard sonatas, of which he wrote well over 500. They exploit the instrument to its fullest capacity, exemplifying his mastery of the homophonic "free style" of composition. His works display the vivacity, grace, and ornamentation of the rococo, and at the same time show boundless invention and originality. Scarlatti is widely considered to be the founder of modern keyboard technique.