Until Now is the second compilation album by Swedish house music group Swedish House Mafia. The album was released on October 22, 2012 to mixed reviews. This will be the trio's final album before their hiatus so they can work on separate projects. "Save the World" is the first single to be released from the album. The single featured vocals from Swedish singer John Martin. It charted at number 4 in Sweden. "Antidote" (vs. Knife Party) is the second single from the album and debuted at number 4 in the UK charts. "Greyhound" is the third single from the album. The song was performed at the Madison Square Garden in December 16, 2011. "Don't You Worry Child" is the fourth single from the album. It was first performed at their final UK gig, at the Milton Keynes Bowl on July 14, 2012. It features John Martin on vocals. The single was released in Europe, Asia and Australia on 14 September 2012, 18 September in the USA and Canada and 7 October in the UK.