The internet has become a major player in today’s music market, especially thanks to online sales from sources such as iTunes; while most web music sales sites boast around 40,000 songs, iTunes offers over 1.3 million—with 25,000 new songs being added each month. From online purchasing to great artist sites like Gorillaz, Lenny Kravitz, and Iggy Pop to recording companies, labels, ringtone sites, online radios, and more, this is the essential guide for researching and enjoying music online.