Olivia Rodrigo was the most popular songwriter in the world in 2021, according a new report published by Blokur and UK songwriter organisation The Ivors Academy analysing which writers were behind the biggest music on the streaming platforms. However, below her only fourteen other female songwriters feature in the top 100.To compile this list, Blokur took the top charting tracks of 2021 on Spotify, Apple Music, Amazon Music and YouTube and compared them against its database of song data to determine who wrote each song and what share of the copyright they took.