July 2000
Apple acquires SoundJam, the music management software that would become iTunes

January 9, 2001
iTunes 1.0 music software is launched. It is available only for Mac users.

7 Ways iTunes Changed the Music Biz: Doug Morris, Jeff Price, More

November 10, 2001
The first iPod is released

April 28, 2003
iTunes Music Store is launched in the U.S.

May 5, 2003
iTunes Store sells over 1 million songs in first week. Warner Music chairman and CEO Roger Ames calls the milestone "totally unexpected."

October 16, 2003
iTunes for Windows debuts. Apple partners with AOL to give AOL's 25 million users one-click registration for iTunes.

January 6, 2004
iPod Mini is launched.

June 5, 2004
iTunes Music Store is launched in United Kingdom, Germany and France.

July 11, 2004
iTunes Music Store sells its 100 millionth song.

iTunes 10-Year Anniversary: 12 Best iTunes Ads

October 26, 2004
Apple debuts the U2 iPod and launches the European Union iTunes Music Store.

May 10, 2005
iTunes Music Store launches in Denmark, Norway, Sweden and Switzerland

July 17, 2005
iTunes Music Store sells its 500 millionth song.

September 7, 2005

Apple launches the iPod Nano.

October 4, 2005
iTunes Music Store launches in Japan, the world's second-largest music market, and hits one million downloads in four days.

October 12, 2005
iTunes 6 software includes music videos, Pixar short films and TV episodes. 

October 25, 2005
iTunes Music Store launches in Australia.

February 23, 2006
iTunes Store sells its 1 billionth song.

April 4, 2006
Dave Matthews Band catalog is added to iTunes Music Store.

August 8, 2006
iTunes Music Store offers a Bob Dylan digital box set for $199.

February 6, 2007
Steve Jobs posts online letter to labels encouraging them to drop digital rights management on music downloads.

The Evolution of iTunes: The Birth of a Colossus

March 29, 2007
iTunes Music Store debuts the Complete My Album feature.

May 30, 2007
iTunes Music Store launches iTunes Plus, DRM-free, high-quality music files for $1.29 apiece.

August 14, 2007
John Lennon catalog debuts at the iTunes Music Store.

September 5, 2007
Apple debuts the iPod Touch, launches partnership with Starbucks to help customers find and buy music via stores' WiFi.

April 3, 2008
iTunes Music Store passes Walmart to become the top music retailer in the United States.

June 19, 2008
iTunes Music Store tops 5 billion songs sold.

January 5, 2009
Steve Jobs releases letter that addresses his health problems, a "hormone imbalance" that robbed his body of proteins.

January 7, 2009
iTunes introduces tiered pricing for single track downloads.

September 9, 2009
iTunes debuts iTunes LP to deliver additional content with album purchases.

January 27, 2010
Apple debuts the iPad tablet.

February 25, 2010
iTunes Store sells its 10 billionth song.

April 13, 2010
The iPad tablet goes on sale in the United States, sells over 300,000 units on first day.

September 1, 2010
iTunes 10 includes the social network Ping.

November 16, 2010
The Beatles catalog is added to iTunes.

June 6, 2011
Apple introduces iCloud.

August 24, 2011
Steve Jobs resigns as Apple CEO.

October 5, 2011
Steve Jobs dies.

December 31, 2011
iTunes Music Store launches in Brazil, Argentina, Chile and 13 other Latin American countries.

September 30, 2012
Apple retires its Ping social network.

December 4, 2012
iTunes Music Store launches in Russia, India, South Africa and 53 other countries.

February 6, 2013
iTunes Music Store sells its 25 billionth song.