Digipack of Pink's album; Greatest Hits... So Far!!! |
They are usually used so that the artist stands out on the shelves, but also to add value to their product. It plays with our love for music, and is seen as something extra for the fans.
Rock&Pop music shelf in HMV Oxford Street |
You may have not realised, but the importance of packaging in the music industry has significantly increased. Since music is available to download on the Internet, the different products of an artist will face a much wider competition (it won't be limited by the size of a shelf in HMV!). Therefore, it is very important for the artist to stand out from the crowd.