Imagine Dragons.

With their song It's Time being their big break Imagine Dragons already have an album out called Night Visions.  This album features their 3 singles It's Time, Radioactive, and Demons. Imagine Dragons are currently on tour. Their sounds is similar to Mumford & Sons but they have their own twist to it. They use instruments that many bands so not use so it gives them that original sound they have.

Here is the video for their song Radioactive which is on their album Night Visions.