Music experts find formula for ‘perfect’ Christmas number one

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Music researchers have crunched the numbers on Christmas songs to find the perfect formula for a festive hit.

Experts at a UK music label looked at every Christmas number one from the last 50 years to see what they have in common and determined that the Pet Shop Boys’ 'Always On My Mind' came closest to being the quintessential tune for the holidays.

“I think we’re a long way from an algorithmically-generated Christmas number one,” said Howard Murphy, founder of Ostereo which conducted the research, in a press release accompanying the data.

“But certain characteristics do make a song more likely to resonate with audiences at Christmas,” he added.

For a song to hit the top spot on Christmas Day it needs to be three minutes and 57 seconds, in the key of G major, played at 114 beats-per-minute and performed by a 27-year-old solo artist, according to the research.

Other key trends among the songs analysed were that the majority were ballads, nearly half were cover versions and nearly all were about something other than Christmas.

'Always On My Mind' hits the ideal length and key exactly, as well as being a cover of Elvis’ 1972 hit, but is slightly faster than the formula suggests at 125 bpm and performed by a duo who had an average age of 31.5 when the song hit number one at Christmas 1988.

'Mary’s Boy' by Boney M came a close second, researchers said, with a tempo of 113 bpm, length of four minutes two seconds and a key of F, two semitones lower than G.

Murphy said: “You can’t turn an average song into a hit at any time of year – never mind Christmas – so adding sleigh bells to a Christmas song won’t make a difference if the song isn’t already great.

“But certain characteristics do make a song more likely to resonate with audiences at Christmas. Clever instrumentation can enhance the festive feel of the song.

“For example, without the church bells at the end, East 17’s 'Stay Another Day' is still a great song, but it’s not a Christmas song.”

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