From Articlesbase comes this article about Apple’s iPod and iPod Video campaigns. Though written in May 2007, it helps put things into historical perspective.
The Advertising Campaigns Of iPod And iPod Video
The iPod presents, besides an interesting technical evolution, an original and innovative way of promoting and advertising, which differs in style and slogans from the first ads of the first generation of iPods, to the most recent iPod video advertising campaigns.
The first campaigns concentrated upon the new product promoted both the iPod and iTunes brands. These advertising campaigns were lead by the slogan “A thousand songs, in your pocket”, which was launched in November 2001.