Apple today at its WWDC keynote announced iTunes Radio service to compete with Pandora, Spotify, Rdio, Xbox Music, Google Play Music All Access, along with others. This new service is built right into the Music app on iOS devices and is free with ads but sans ads for iTunes Match users.
Starting in the US today, with the application, users can create their own station. It can keep the tracks of all the songs which you are listening across all devices and stations and made easily accessible for later on use also via history. It works on iPhone, iPod Touch, iPad, and in Apple TV, Macbook computers, and more.
To catch WWDC 2013 updates, click here.