This story is part of, CNET's complete coverage from and about Apple's annual developers conference.
After more than a year of negotiations with the music labels and publishers, Apple Monday unveiled its WWDC in San Francisco., streaming radio service -- called iTunes Radio -- at
"It is the best music player we have ever done," said Apple iTunes chief Eddy Cue, who showed off the product.
Apple's product aims most squarely at Pandora, which has more than 70 million active monthly listeners but is available only in the U.S., Australia, and New Zealand. iTunes Radio will launch in the U.S. this Fall, but Cue said it will roll out in other countries soon after.
The service is ad-supported, although it will be ad-free to people who subscribe to iTunes Match, the company's cloud-based music library that costs $24.99 a year. It will come built into iOS 7, the iPhone, iPod Touch, Apple TV, and iTunes on Macs and PCs. It comes with 200 stations built by the music team at Apple, and users can follow music that's trending on Twitter. In addition, iTunes Radio is supposed to get better -- meaning, more personalized -- the more you use use it.
With this new service, Apple is entering a crowded field. Streaming music -- from services such as, Deezer, and Pandora -- make up the , as people want access to music anytime, anywhere.
The launch of iTunes Radio comes after a busy last few weeks of deal making. Cue and his team, long aiming for a summer rollout of the service, only secured deals with the.
Google, at its developer's conference last month, launched a Spotify-like. , which has become the dominant place where young people go to hear music.
CNET reported details ofin April.
Update, 1:14 p.m. PT: Adds details on iTunes Radio.