"Launched in public beta on September 25, 2007,[1] in January 2008 it became the first music store to sell music without digital rights management (DRM) from the four major music labels (EMI, Universal, Warner Music, and Sony BMG), as well as many independents.[1][2][3][4]"
"On January 6, 2009, Apple announced that DRM had been removed from 80% of the entire music catalog in the U.S."