Greg James and Dotty present and are joined by Canadian chart topper Shawn Mendes. With over four billion views online, Shawn performs two songs live in the studio. Indie rockers The Vaccines perform their new single I Can't Quit, while Brits Critic Choice winner Jorja Smith delivers a special performance of her track Blue Light. Craig David performs and Dotty meets US singer-songwriter Charlie Puth, while Nile Rodgers and Chic take on the gig in a minute challenge.