Over the weekend, electronic dance music trio Swedish House Mafia premiered their new single “Don’t You Worry Child” featuring John Martin! On the heels of their highly-publicized hiatus announcement about a month ago, the legendary trio premiered the track on Pete Tong’s Essential Selection. The good news is that Don’t You Worry Child has lived up to the massive expectations and is a gorgeous progressive house tune with magnificent vocals from John Martin, who was also featured on Save The World. While there is still some debate as to whether this is in fact their last single, I really hope that it is not. Be sure to check it out below, Enjoy!