( January 27. 1756 –  December 5.1791) was a prolific and influential composer of the Classical era. His output of over 600 compositions includes 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.

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.

Over the course of his working life, Mozart switched his focus from instrumental music to operas, and back again. He wrote operas in each of the styles current in Europe: opera buffa, such as The Marriage of Figaro, Don Giovanni, or Così fan tutte; opera seria, such as Idomeneo; and Singspiel, of which Die Zauberflöte is probably the most famous example by a composer.