Last Christmas by Wham! finally made it to Christmas No 1 last year, for the first time since its release in 1984, when it was thwarted by Band Aid. It was proof that in the streaming age, anything goes — a decades-old song can reach the top at Christmas. Yet so can a new hit that has nothing to do with the season whatsoever. The bookies have Last Christmas as the odds-on favourite again this year, but That’s So True by the nepo-baby songstress Gracie Abrams (her dad is the film director JJ Abrams) and APT. by the K-pop star Rosé and Bruno Mars are also in with a shout. Here is a rundown of the contenders and odds.