A band/artist uses a website to not only advertise but also to gain a wider following and encourage their audiences to continually strive to make sense of the bands incoherent image. This can allow a following to begin as a bands website is the most up to date format of advertising for the band therefore it is a place and method of selling their goods for example music, concerts and merchandise, while keeping connected with their audience.
A website is an official way of establishing the band to the world and releasing the bands image world wide and accessible to everyone and anyone. This means that traditionally the only way a band image could be experienced is through concerts and albums. An example of the use of albums in a traditional method of brand image is shown in the Beatles band album developments starting from their debut album cover of the boys looking all friendly and nice and then looking more progressively serious till their final album of not even having a recent image of them.
Here is a video analysis on that -