Updated, 10 Am: Several performers have been added to the hourlong benefit concert Fox Presents The iHeart Living Room Concert for America, which airs at 9 p.m. Et/6 p.m. Pt Sunday, March 29. Joining the Elton John-hosted special are Camila Cabello, Dave Grohl, H.E.R. and Sam Smith. Also set to make appearances are Ciara, Demi Lovato, Lizzo, Russell Wilson and more.
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