- 1 A - Charts von 1A Radio

- 1 A - Charts von 1A Radio is an online radio station from Germany, broadcasting in german. The format focuses on dance, hits, house, pop, rock, top40. "Don't You Worry Child" is the sixth single released by Swedish house music supergroup Swedish House Mafia. It is the last single from their second compilation album, Until Now, featuring vocals from Swedish singer John Martin. In the United States, it is the act's second number-one single on Billboard's Dance/Mix Show Airplay chart, following "Save the World". Listeners can tune in via Radiofinder with 64 kbps streaming. Official website: http://www.1aradio.com/.

- 1 A - Charts von 1A Radio - from Germany broadcasting in german. Specializes in dance, hits, house, pop, rock, top40. The station is actively broadcasting and available for online listening.