Golden collaboratorsВ Calvin Harris and Rihanna reunited for This Is What You Came For, and while it stalled at Number 2 thanks to Drake, it still finished fifth for the year, rackingВ up 1.28m combined sales over 2016. MORE: The Official Top 40 biggest songs of 2017 Mike Posner вЂ™s big comebackВ track I Took A Pill In Ibiza (Seeb remix) spent four weeks at the summit in March/April and was the fourth biggest tune of the year, with a tally of 1.38m. Sia's Cheap Thrills spent 38 weeks in the Top 40 but missed out on a Number 1 вЂ“ it did, however, claim its place as the thirdВ biggest song of 2015, clockingВ up 1.46m combined sales. The Danish band spent five weeks at Number 1, and actually finished top of the year's sales-only countdown.

Up in second with a combined tally of 1.49 million, was Lukas Graham's 7 Years. MORE: The UK's Official Top 40 biggest albums of 2016 The most streamed song of 2016, One Dance also enjoyed the biggest one-week combined sales figure for a Number 1 single of the year, notching up 140,000 during its fourth week at the top in April. One Dance, Drake's first Number 1 as a lead artist, racked up 1.95 million combinedВ sales over the year, made up of 530,000 downloadsВ and an impressive 142 million streams. One Dance was the inescapable sound of the summer in 2016, notching up an astonishing 15 weeks at Number 1, equalling Wet Wet WetвЂ™s epic stint with Love Is All Around in 1994 but falling short of the all-time record.

2016 was a big year for pop music, and sitting at the very top of the year-end rundown, which counts digital, physical and streaming equivalent sales, was вЂ“ what else? вЂ“ Drake's One Dance, feat.

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