Jack Duff is a music artist from Ireland who is better known as half of the singing duo 'Jack and Cormac.' Jack was one of the semifinalists on the talent reality show 'Britain's Got Talent' (BGT). He joined the show along with singer and guitarist Cormac Connell, and after the show ended, they formed a duo. As a duo, Jack and Cormac have created cover versions of the works of several popular artists. Jack joined the boy band 'RoadTrip' after parting ways with Cormac. Jack has performed at many live shows with ‘RoadTrip.’ He also appeared in a brief role in a short film released in 2015.