Purpose and success criteria of a Music Video

The reason music artists create a video for their songs are:

• to get the song more popular
• to advertise themselves
• to have an illustration with the song
• to appeal to the visual audience
• to express emotions
• to make an artistic statement

The success of a Music Video can be judged on:

• downloads
• the change of peoples opinions
• how memorable it is
• discussion in the media 
• sales
• hits on youtube
• charts
• CD sales
• MTV awards

Justin Beiber gets a lot of youtube hits, an example being this one.  

A video may become popular because it is liked for its