This is why you should always pay attention to buskers

We’ve all done it - rushed through Grafton Street on a busy Saturday afternoon, heard an amazing busker outside BTs but didn’t take the time stop.

Well, you will after you hear who was casually busking in Waterloo station over the weekend.

None other than the comeback king, James Arthur.

Going by the name of Willy, the X-Factor winner donned a long white beard and prosthetic mask to disguise himself from the crowds.

It pays to always look at the busker before tipping 😉 . Here's a bearded #JamesArthur in disguise at Waterloo earlier today. #buskinlondon pic.twitter.com/FkFG86v5Bt

— Ian Woolley 🇬🇧 (@Quizbritain) October 31, 2016

He serenaded commuters with his current number one single Won’t let go as well as songs from his new album Back From The Edge.

Busking James Arthur @ Waterloo - and people are giving him money haha pic.twitter.com/q7PmWIYsj7

— Michael Hincks (@MichaelHincks) October 31, 2016

Sometimes the voice gives it away. Here's a bearded @jamesarthur23 spoiler at Waterloo earlier. #JamesArthur https://t.co/kP5jGQDfMG

— Ian Woolley 🇬🇧 (@Quizbritain) October 31, 2016

James Arthur dressed as an old man singing in Waterloo station. People were giving him money. 😂😂 pic.twitter.com/CievQjgABo

— Charlie (@Charliearliee) October 31, 2016

Without forgetting his X-Factor single Impossible.

We'll never pass a busker the same again.