Simon Cowell will always remember late America's Got Talent contestant Jane Marczewski.
 
Just three days after Jane's untimely passing, the AGT judge took to Instagram to honor the singer, who often went by Nightbirde. "She was an extraordinary person, so brave, so talented," he wrote Feb. 22. "She made a huge impact on AGT and the world, her courage was incredible and her determination to fight this terrible illness was remarkable. Rest in peace, Jane. I am sending my love to her family."
 
Jane passed away on Feb. 19 at the age of 31 after a four-year battle with cancer, her family announced in a statement to Today. "Those who knew her enjoyed her larger-than-life personality and sense of humor," the message read. "She had a witty joke for every occasion—even if the joke was on her. Her lasting legacy will be the gift of hope she gave to so many through her music and the strength she found in Jesus."

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