9-year-old singer stuns the 'America's Got Talent judges again with powerful Alicia Keys cover

She may only be nine-years-old, but Angelica Hale has wowed the America's Got Talent judges with another jaw-dropping performance of Alicia Keys' Girl on Fire.

She first caught the attention of Simon Cowell with her performance of My Heart Will Go On, but this time around guest judge Chris Hardwick was in awe, even giving her the golden buzzer.

"You are unbelievable," he told her.

The song had particular meaning for Hale. At four years old, a bacterial infection severely damaged her kidneys and left her fighting to survive on life support. She later received a kidney from her mother.