Coldplay made their Global Citizen performance extra special on Saturday night.

After the first chorus of their song “Fix You,” frontman Chris Martin introduced Billie Eilish and her brother Finneas to help with the song.

The pair took over the second verse of the song before joining in for the remainder with Coldplay.

Other guests popping up during Coldplay’s set included BTS, Shawn Mendes, and Camila Cabello.

Did you stream the Global Citizen festival? Who was your favorite performer?

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