Looking at the structure of music videos- Back to black

This video by Amy Winehouse demonstrates the idea of amplification. Her video tells her story, by the lyrics as well as the film in it. The artist is both a participator in the video and the narrator. We see her singing throughout the song, most of the time unless it is showing another clip where we hear an instrumental or her voice on top. She's the main focus in the video, with the ratio of narrative and performance being 50:50.