Post-war classical music refers to the period of classical music that emerged after World War II, roughly from the late 1940s to the 1960s. This era was marked by a shift towards new styles and techniques, including the use of atonality and serialism. Composers like Pierre Boulez and Karlheinz Stockhausen explored innovative approaches, breaking away from traditional forms and harmonies. During this time, there was also a rise in electronic music, as composers began experimenting with technology to create new sounds. The influence of jazz and popular music became more pronounced, leading to a fusion of genres. This period laid the groundwork for many contemporary classical music trends.