After releasing their well-recepted “Wild One Two” together, David Guetta and Nicky Romero are back creating a new track. This one is called “Metropolis.” “Metropolis” is an energy filled track that should be popular well before its official release. It kind of reminds me of the new Swedish House Mafia track “Greyhound” and Axwell’s mix of Michael Calfan’s “Resurrection.” No official release date has been announced so stay tuned. Check it out below.