iTunes was a it right off the bat, more than a million songs were sold in the first week. U2‘s Stuck in a Moment was the top-selling track, and the top-selling album was Beck‘s Sea Change. In Canada, Avril Lavigne’s Complicated was the 10 millionth song downloaded only five months later in September. By the end of 2003 25 million songs had been sold. And that is only a few of the highlights of iTunes history. Apple has created an informative minisite to celebrate iTunes milestones.
By the summer of 2004, the iTunes service had one-million available songs available. The 50 millionth song was downloaded in March: The Path of Thorns by Canadian artist Sarah McLachlan. The Store launched in Canada in December, with U2 again topping the charts with the top song (Vertigo) and top album (How to Dismantle an Atomic Bomb.)
2006 was a milestone year when iTunes sold its billionth song and in September movies were added. The service has spread around the world grown to become among the biggest if not the biggest music retailer in North America with over 25 billion songs sold.