Swedish House Mafia - John Martin - 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 was their second number-one single on Billboard's Dance/Mix Show Airplay chart. In the United Kingdom, "Don't You Worry Child" made its debut at number one, and remained it for 1 week.