This document provides an overview of classical composers and genres, focusing on Vienna in the late 18th and early 19th centuries. It describes the dominance of the Viennese School and notable composers including Haydn, Mozart, and Beethoven. Haydn is considered the father of the symphony, composing over 100, while Mozart produced famous operas and concertos before dying at age 35. Beethoven was a transitional figure between classical and romantic eras, producing heroic symphonies including his famous Symphony No. 5, which features the well-known "short-short-short-long" motif.