This document discusses the history and evolution of music videos. It notes that early music videos included sing-along cartoons and live-action musical performances incorporated into cartoons. In the 1980s, MTV launched and began playing music videos 24/7, making the music video a central part of music marketing. Today, high production music videos that cost between $20,000 to $500,000 are as important as the songs themselves in appealing to audiences and promoting artists.