1) Andrew Goodwin analyzed key features of music videos in his book "Dancing in the Distraction Factory". He identified 6 features of music videos and 5 ways to analyze them.
2) The 6 key features of music videos are: demonstrating genre characteristics; relationships between lyrics and visuals and between music and visuals; record label demands like close-ups of artists; references to looking like screens and mirrors; and intertextual references to other media.
3) The 5 aspects for analyzing music videos are: seeing the music itself through its structure and artist's voice; narratives and performances; the importance of the star image; and narratives and performances working together for repeatability and authenticity.