The post-Baroque period of music exemplified by Joseph Haydn, Wolfgang Amadeus Mozart, and Ludwig van Beethoven (approximately 1750-1830).
A traditional genre of music historically referes to music written during the so-called Classical period (c. 1770-1830), particularly the music of Beethoven, Haydn and Mozart. However there are modern classical composers. Classical music is normally written down quite precisely (using standard musical notation) with every instrument and its part carefully specified.
The period in music that comes after the Baroque period and before the Romantic; the dates are roughly 1756 (the year Mozart was born) to 1830 (three years after the death of Beethoven).