There are several purposes and structures of music videos. Music videos primarily promote a single and album, as well as the artist. They typically run 3-4 minutes and combine live performance, narrative elements, and visual imagery. Common structures include performance videos, narrative videos, thematic videos, and symbolic videos. Performance videos focus on shots of the artist singing and include close-ups and unique visual styles. Narrative videos tell a story, either related to or suggested by the song's lyrics. Thematic and symbolic videos use recurring themes and symbols to build meaning.