"Shape of You" — Ed Sheeran

Over 4.3 billion streams. The song that held the #1 spot from 2017 until "Blinding Lights" dethroned it. Ed Sheeran wrote it in 20 minutes, originally for Rihanna. The marimba riff became the most recognized pop hook of the late 2010s. Reached #1 in 34 countries simultaneously. Source: Spotify Charts.