One Direction
Lorde
Chris Martin
Pharrell Williams
Sam Smith
Emeli Sandé
Elton John
Self
Self (as One Direction)
Louis Tomlinson
Niall Horan
LIam Payne
Stevie Wonder
Florence Welch
Alison Balsom
Martin James Bartlett
BBC Concert Orchestra
Nicola Benedetti
Jake Bugg
Eliza Carthy
Tees Valley Youth Choir
Jamie Cullum
Danielle de Niese
Katie Derham
Jaz Dhami
Paloma Faith
Dave Grohl
Jools Holland
Chrissie Hynde
Ethan Johns
Lauren Laverne
Zane Lowe
Baaba Maal
Gareth Malone
Brian May
Brian Wilson