One of Radionomy's strong points lets you use the search bar to find both musical groups and styles. Search for 'Die Antwoord' to try and find radio stations that play their songs, or opt for 'classical' and try to find music radio stations by genre.
If you create an account (which is free and only takes a couple of seconds) you can save radio stations as favorites. Thanks to this feature you can access all of them with just a tap of the screen.
Radionomy is an excellent music app that lets you access thousands of songs whenever you want. The only thing you need to do so is a good Internet connection.
Requires Android 4.1 or higher