Back in August, the singing duo were spotted busking on Grafton street to throngs of lucky passersby and now we know why. The pair have been filming a documentary.

Over the weekend, they were spotted again at a pub in Mullingar for Fleadh Cheoil na hEireann and even performed a rendition of 'Chasing Cars' by Snow Patrol. Turns out, the lads were filming a documentary sponsored by Guinness called 'Niall Horan’s Homecoming: The Road to Mullingar with Lewis Capaldi'.

The documentary kicks off at 10pm on October 16, 2022 on Virgin Media One.