In the music industry, there are three major labels: Universal Music Group, Warner Music Group and Sony Music. According to Peter Kafka at All Things D, Apple has now signed agreements with all three labels, opening the way to a possible Apple announcement of the iRadio streaming service during the WWDC 2013 Keynote on Monday.
"iRadio" may not be the actual name of the service, but has caught on as speculation has grown about Apple's music streaming plans. Apple still has to sign up Sony/ATV, the music publishing part of Sony, but is apparently quite close in negotiations.