A cross-platform concert supporting workers engaged in Covid-19 response efforts featured performances by some of the biggest names in music on Saturday.

The eight-hour “One World: Together at Home” event, which was organized by the antipoverty organization Global Citizen, was curated in part by Lady Gaga.

“It is so important to think globally and support the World Health Organization to curb the pandemic and prevent future outbreaks,” Lady Gaga said at a news conference on Monday. “We want to highlight the gravity of this historical, unprecedented and cultural movement.”