Use iTunes Radio on your computer, iPhone, iPad, iPod touch, or Apple TV
Create and modify stations
You can create new stations based on artist, track, genre, or sub-genre. To create a new station, tap the Plus icon under My Stations. When asked, type an artist name, track name, or genre or select a genre from the list. Before you create a station by genre, iTunes Radio will play a preview of that station for you. After you decide on a genre, tap the Plus
icon to the right of the genre name to create your station.