Wolfgang Amadeus Mozart, full name Johann Chrysostom Wolfgang Amadeus Mozart (27 January 1756 – 5 December 1791) was a prolific and influential composer of the Classical era. His over 600 compositions include works widely acknowledged as pinnacles of symphonic, concertante, chamber, piano, operatic, and choral music. Mozart is among the most enduringly popular of classical composers, and many of his works are part of the standard concert repertoire.

Mozart's music, like Haydn's, stands as an archetypal example of the Classical style. His works spanned the period during which that style transformed from one exemplified by the style galant to one that began to incorporate some of the contrapuntal complexities of the late Baroque, complexities against which the galant style had been a reaction. Mozart's own stylistic development closely paralleled the development of the classical style as a whole. In addition, he was a versatile composer and wrote in almost every major genre, including symphony, opera, the solo concerto, chamber music including string quartet and string quintet, and the piano sonata. While none of these genres were new, the piano concerto was almost single-handedly developed and popularized by Mozart. He also wrote a great deal of religious music, including masses; and he composed many dances, divertimenti, serenades, and other forms of light entertainment.

The central traits of the classical style can be identified in Mozart's music. Clarity, balance, and transparency are hallmarks of his work.