Don't You Worry Child

"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". It is the group's biggest hit single to date, as well as the final single released before their disbandment in early 2013. It was released to widespread acclaim and received a Grammy nomination for Best Dance Recording in the 2013 Grammy Awards, as did its predecessor, "Save the World", the previous year. The song is written in the key of B minor.