Sounds like: Banks, Christian Strobe, The Photographic
Very often the official remixes that Ellie Goulding posts to her SoundCloud account are ... overwhelming. And I don't mean that in a good way. They tend to err on the side of heavy electronica, and are anything but easy listening (eg, this yucky Tiesto remix).Fittingly, Leo Kalyan's remix won't be found on Ellie's official page -- perhaps because it's too smooth? And I think that's quite alright, because this version of "Burn" is far easier to listen to than the original.Props to HillyDilly for the discovery.