'Last Christmas' - Wham - The previous record holder before Bush was Wham and their seasonal favorite song 'Last Christmas,' which completed a 36-year run to the top at the turn of 2021.
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'Truth Hurts' - Lizzo - The popular track was released in September 2017 but didn't chart until after it appeared in the 2019 rom-com 'Someone Great.' By September 2019, it had reached no. 1.
'Here' -Alessia Cara - The Canadian singer's debut single was released in 2015, but only debuted in the Billboard Hot 100 in August (at no. 95) and took six more months to peak at no. 5 in early 2016.
'Scars to Your Beautiful' - Alessia Cara - The same goes for her follow-up single, which was released in July 2016, but didn't enter the top 10 until February 2017.
'Just Dance' - Lady Gaga - Released on April 8, 2008, Lady Gaga's debut single spent almost five months on the Billboard Hot 100 before finally peaking at the chart's summit in January 2009.
'Let Her Go' - Passenger - This sweet-sad song was released in July 2012, but only reached the Top 20 in November 2013. It peaked at no. 5 on the Billboard Hot 100 in February 2014.
'Runaway' - Aurora - This track released in 2015 saw a huge spike in listeners and soared up the UK and Spotify Viral charts in 2021 following the track's success on TikTok.
'Infinity' - Jaymes Young - Released as a single on June 23, 2017, as part of Young's debut album, the song found new fame on TikTok in 2021 and peaked at no. 24 in the US Top 40.
'Title' -Meghan Trainor - This song off Trainor's 2014 debut album also called 'Title' was not released as a single. Thanks to TikTok and a viral dance, the video was uploaded online in December 2021.
'You Spin Me Round' - Dead or Alive - This now-famous track was released as a single in November 1984, and took 17 weeks to reach no. 1 in the UK in March 1985.