Ever the savvy businessman, Jobs explained at the launch of the iPod that Apple was entering the music business "because it is part of everyone's life and is a very large target market all around the world".
Apple revolutionized the way people listen to and buy music on the move, offering up to 1,000 songs on a device the size of a deck of cards by using a 5GB 1.8in hard drive. It was a feat that had never before been accomplished.
The iPod was also the first music player to come with a decent battery life, promising 10 hours of continuous playback.
Apple still sells millions of iPods every quarter, despite its being over 10 years old. There have a number of iterations, including the iPod Mini, Nano and Shuffle, and the iPod Touch which inspired the design for the iPhone.