Who sings the John Lewis Christmas advert song? What you need to know about Dan Smith's cover of 'Can’t Fight This Feeling'

Who sings the John Lewis Christmas advert song and what is it called?"Metro.co.ukJohn Lewis Christmas advert 2019 – who sings the song this year?"The SunJohn Lewis Christmas advert songs ranked: How does 2019's cover track compare?"The IndependentWho is