What is the purpose of a Music Video?

A music video can have many different purposes, some of these purposes can be;
To add value to the song
Interpretation of the lyrics
To tell a story
For people to emphasise the visual element
To promote the song
To promote the artist
Gain interest in the song/band
Spark debates of controversy
To entertain
Target aparticualr audience
Makes sense of the song

The main purpose of a music video is to promote the song and the artist, because of the creation and increase of music videos it means that songs can now befurther understood and played in a wider variety of media. Instead of music just being played on the radio it can now be shown on TV on music channels such as MTV and VIVA. Also it means it can be shown on websites such as Youtube.com. By people accidently coming across music video's it can lead to the person listenning to a songand liking it, making them look for more songs by the artist, causing them to become more popular and gain a wider audience.