The Classical Period of music, lasting from 1750 to 1820, sought to emulate the simplicity and elegance of ancient Greek art, with a focus on the emerging middle class as an audience. Key developments included the rise of the piano, standardization of the orchestra, and the evolution of musical forms such as sonatas and symphonies, led by notable composers like Haydn, Mozart, and Beethoven. This era also witnessed a shift in opera themes from mythological to everyday life, reflecting the changing societal dynamics.