For the next however many weeks–I will be using a Wikipedia page (I know, but I did manage to verify a bunch of the songs listed) that features Billboard Year-End Number-One Singles.
Some years have more than 1 song listed…
2016–Justin Bieber – Love Yourself (PURPOSE : The Movement)
2017–Ed Sheeran – Shape of You (Official Music Video)
2018–Drake – God’s Plan
2019–Lil Nas X – Old Town Road (Official Video) ft. Billy Ray Cyrus
2020–The Weeknd – Blinding Lights (Official Audio)
This is an open thread