Information about digital entertainment in iTunes comes from Gracenote®.
iTunes is the most popular digital media application released, and when iTunes consumers search for information about an artist all of that information comes from Gracenote. The software program is also an interface that manages the contents on Apple's popular iPod digital media product family. When connected to the Internet, iTunes can connect to the iTunes Store and download purchased digital music, music videos, television shows, games, podcasts, and feature length films.
iTunes is available as a free download for Mac and Windows operating systems and is bundled with Macintosh computers, as well some HP and Dell computers.