Imagine going about your daily journey to work and then John Legend pops up at the train station!

Well, that's what happened to London commuters this morning.

The dad-of-one cheekily tweeted that he was arriving at London's St Pancras Station, and asked, "Do they still have that piano there?"

After landing at the station, he then proceeded to perform a 10-minute set of some of his greatest tracks, which included All of Me and Ordinary People.

And needless to say, everyone rightly lost their sh*t: