This document summarizes Goodwin's theory on key features of music genres and characteristics of music videos. It identifies six features: 1) genre characteristics reflected in music videos, 2) relationship between lyrics and visuals, 3) relationship between music and visuals, 4) star image motifs, 5) notion of looking, and 6) performance, narrative or concept-based approaches. For each feature, it provides definitions and examples to illustrate common ways they are demonstrated in music videos.