![](https://ychef.files.bbci.co.uk/624x351/p0j674yl.jpg)
Why Coldplay are the 21st Century's defining band
27 minutes ago Chris Martin from Coldplay (Credit: Getty Images)Ahead of their record-making fifth Glastonbury appearance – why the British rock band have overcome the naysayers to become the era's most triumphant artists. It is strange to recall a …