When big stars perform at the Principality Stadium they are normally helicoptered in or chauffeur-driven to the venue - not Chris Martin. The Coldplay frontman shocked commuters by taking the train to Cardiff Central.
The chart-topping band are performing in Cardiff for two sell-out nights this week as part of their Music of the Spheres tour.
At the weekend they took over the Etihad Stadium in Manchester with a riot of colour and confetti as they performed to thousands of music fans.
