"She made a huge impact on AGT and the world," Cowell said of the singer, who died of cancer on Feb. 19.
Simon Cowell shared an emotional tribute to "America's Got Talent" star Jane "Nightbirde" Marczewski following the singer's death.Simon Cowell is paying tribute to"America's Got Talent" star Nightbirde, calling the late singer a"brave" and"talented" person. "Heart breaking news to hear about @_nightbirde, she was an extraordinary person, so brave, so talented. She made a huge impact on AGT and the world. Her determination to fight this terrible illness was remarkable. Rest in peace, Jane. I am sending my love to her family," the 62-year-old Cowell, a judge on the show, wrote in an emotional message Tuesday on