Cel reveals viewers' favourite Number 1 songs of 2016 that have been picked for this week's Playlist, and Gabrielle Aplin joins him in the studio to put some new year resolutions into action. On top of that, Mista Jam introduces the top five rising stars of 2017 from the Sound of the Year shortlist and Clara Amfo crowns the winner. Plus the best of SAY WHAT featuring Zara Larsson, Little Mix, Lukas Graham and Jay Sean; and Radio 1's Greg James finds out who takes the first Number 1 slot of 2017. Show less