Beats has launched its much-rumored Beats Music streaming service and app, directly competing with other services like Pandora, Spotify, Rdio and Apple’s iTunes Radio. The service is heavily built on curation, with Beats hiring music experts from publications like Pitchfork and DJs from some of the most listened to radio stations around the country to curate stations, playlists and to make sure the music catalog of 20 million songs allows for “great listening choices”.