In case you missed it, on Sept. 28, Ed Sheeran and Coldplay's Chris Martin had a musical lovefest at this year's Global Citizen Festival.

Ed has posted footage on his Instagram showing himself and Martin performing Coldplay's "Viva La Vida" backstage and onstage, as well as Ed's "Thinking Out Loud." In addition to those two songs, Sheeran and Martin -- who were surprise performers at the festival in New York's Central Park -- performed Coldplay's "Yellow" and Ed's "Shape of You."

Other performers at the annual festival included Benson Boone, Jelly Roll, Post Malone, Doja Cat and LISA.

The Global Citizen Festival is designed to encourage citizens to take action -- and world governments to commit resources and money -- towards defeating poverty, defending the planet and demanding equity for marginalized communities.  This year's event resulted in $1 billion in commitments.

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