What is a Music Video?

I see a ton of bad music videos. So much that it makes me wonder how the singer in the music video feels when he or she makes that video. I thought about what makes a good music video. I narrowed it down to one point:

 A story 

Having a background to the lyrics of the song or the music itself can help the listener understand why the song was composed in the first place. The story does not have to be outrageously creative. It can be a simple love story. What is most important is that there is something to enhance the message of the song. If all we see are bling bling boys and glittery glossy girls dancing the whole five minutes of the song, I don't feel anything for that song. This does not mean dancing is prohibited, but rather the dancing needs to have some purpose to it.