Imagine this happening!
John Legend stopped many busy commuters in their tracks this morning, as he gave them a surprise performance in London.
Those who were around St. Pancras were lucky enough to catch him in the flesh.
He took to the station's piano and belted out 'All of Me' and 'Surefire'.
John had got the train from Paris and had tweeted ahead of time, tipping fans off.
Now that would be a nice surprise before work!