This document defines and discusses the history and evolution of music videos. It begins with examples of modern music videos and defines music videos as short promotional videos used to market artists and songs. It then outlines the purposes of music videos, including selling songs, entertaining audiences, and promoting artists. The document proceeds to trace the history of music videos from early musical films to the rise of MTV in the 1980s. It concludes with a discussion of common elements in modern music videos like performance, narrative, themes, symbols, and cameos.