BRIT Award winning singer-songwriter, Ellie Goulding, gave two of her biggest fans the surprise of a lifetime when she joined them on stage for a live, impromptu duet of her latest single, Army.

As part of MasterCard’s Priceless Surprises in association with The BRIT Awards campaign, best friends Martha and Lucy, 20 year-old King’s College students, believed they were recording their cover of Ellie’s new track Army for a documentary about music superfans. During their recording, a curtain lifted on their recording booth to reveal they were actually on stage, performing in front of a live audience. The biggest surprise was yet to come, when Ellie herself stepped out on stage to perform the track alongside them. Mastercard YouTube