This document provides an overview of classical music, including its history, major periods, and instruments typically used. It discusses the Medieval, Renaissance, Baroque, Classical, and Romantic periods of Western art music from 500-1910 AD. Some of the most prominent classical composers mentioned include Bach, Handel, Mozart, Beethoven, Debussy, Stravinsky, and Gershwin. The document also shares some interesting facts, such as Mendelssohn rewriting a score from memory and John Cage's 4'33" composition of silence.