Brit-winning singer Tom Odell is likely to have his biggest ever chart hit after being chosen to perform the song for John Lewis's Christmas ad.
His two predecessors in the role have both had number one singles on the back of their campaigns and the firm's commercials have spawned numerous hits.
Tom - who landed the Critics' Choice prize at the Brits last year - is performing a version of the song Real Love, which was a number four hit for The Beatles in March 1996.
The track began life as a solo demo by John Lennon, written in his New York home in the Dakota Building in 1977. When Sir Paul McCartney, George Harrison and Ringo Starr were looking for singles to include in their Anthology project, they provided new backing for Lennon's voice to overhaul the rough tape but it stalled in the charts after Radio 1 failed to add it to the station's playlist.
It has now been recorded by Tom to accompany the ad, which will be screened for the first time tomorrow, with high expectations that the John Lewis connection will propel it to the top of the charts.
The retail firm's ads for the past two years have both generated number one singles - Gabrielle Aplin with The Power Of Love in 2012 and Lily Allen with Somewhere Only We Know last year.
Until now, 23-year-old Tom has achieved just one top 40 single, making it to number 10 with his single Another Love last year although his debut album did go on to top the charts.
The director of the ad Dougal Wilson - who is now on his seventh John Lewis commercial - has always taken a keen interest in the music used in his work and has a side career creating quirky videos for acts such as Coldplay, Bat For Lashes, Will Young and Jarvis Cocker.
Other hits from his John Lewis ads have included Fyfe Dangerfield's version of Always A Woman.
Tom's track is released on iTunes today.