The band and their mentor also speak about the choice of track before performing it. The perfomance was recorded at Wilton's Music Hall in London.
If I Was is out now on Atlantic. Vernon helped produce the record, and has been joining them on tour recently to perform various tracks, including album cut "Make It Holy" which you can watch here.
The band have an extensive tour ahead of them, with shows across the UK and Ireland, both headline dates and festival slots. They've also announced their biggest UK headline show to date at London's Roundhouse on 9 November. Tickets for the headline shows go onsale at 9am on 17 April.
2 - The Leadmill, Sheffield
3 - Live At Glasgow
4 - Cathedral Quarter Arts Festival, Belfast
6 - Olympia, Dublin
7 - Everyman Palace, Cork
23 - Hay Festival, Hay-on-Wye
24 - Somersault Festival, Devon
21 - Green Man Festival, Brecon Beacons
24 - The Albert Hall, Manchester
25 - University, Newcastle
26 - Old Fruitmarket, Glasgow
27 - Beckett University, Leeds
1 - The Institute, Birmingham
3 - Y Plas, Cardiff
4 - Princess Pavilion, Falmouth
6 - De La Warr Pavilion, Bexhill-on-Sea
7 - Colston Hall, Bristol
8 - O2 Academy, Bournemouth
9 - The Roundhouse, London