Greg James is joined in the studio by special guest Lily Allen. Returning with her first new album in four years, Lily performs two tracks, including her latest single Higher. Sam Smith treats Dotty to an exclusive performance when she meets him backstage at the O2 as he embarks on a world tour. Singer-songwriter James Bay also returns with new music, performing his single Wild Love live in the studio. Australian chart toppers 5 Seconds of Summer give a special performance of Want You Back - the lead single from their highly anticipated third album. There is also part two of Dotty's trip to Tokyo to meet Little Mix - this week they take on Sounds Like Friday Night's 60 Seconds of Song challenge. How many of their hits can they cram into one minute?