The document discusses the theory of music videos, categorizing them into two types: performance and conceptual. Performance videos feature song, dance, or instrumental performances, while conceptual videos tell stories through visuals. The theory outlines three characters that conceptual music videos take: the Commercial Exhibitionist who promotes themselves for money and fame; the Televised Bard who uses visual imagery and poetry to tell stories in their videos; and the Electronic Shaman who shifts between different scenes and characters, using synthesized music and effects.