Global Citizen and World Health Organization's One World: Together At Home, "a global broadcast and digital special to support frontline healthcare workers and the WHO," already had a huge lineup (which Lady Gaga curated), featuring Alanis Morissette, Billie Eilish and her brother Finneas, Green Day’s Billie Joe Armstrong, Burna Boy, Coldplay’s Chris Martin, Pearl Jam’s Eddie Vedder, Elton John, Idris and Sabrina Elba, J Balvin, John Legend, Kacey Musgraves, Keith Urban, Lizzo, Maluma, Paul McCartney, Stevie Wonder, and more, and they've since added even more to it.

New additions include The Rolling Stones, Amy Poehler, Andra Day, Annie Lennox, Awkwafina, Camila Cabello, Christine and the Queens, Common, Ellen Degeneres, Jack Black, Jameela Jamil, Jennifer Lopez, Jessie J, Jessie Reyez, Kesha, The Killers, Lupita Nyong'o, Matthew McConaughey, Pharrell Williams, Samuel L Jackson, Sarah Jessica Parker, Sheryl Crow, Taylor Swift, Tim Gunn, Usher, and many more. See the full list on the fest's site. It airs this Saturday, April 18 from 8-10 PM ET NBC, CBS, and ABC, and there will also be a digital stream running from 2-8 PM ET on Alibaba, Amazon Prime Video, Apple, Facebook, Instagram, LiveXLive, Tencent, Tencent Music Entertainment Group, TIDAL, TuneIn, Twitch, Twitter, Yahoo, and YouTube.

Meanwhile, The Killers are also doing a livestream and Q&A on Saturday afternoon at 3 PM ET on Instagram, and you can ask them questions in advance on Twitter.