You can watch his performance right here,
Neil performed, Amazing Grace on the show in front of the American Idol judges and finalists.
Also performing on the show was Natasha Bedingfield, who sang, Pocketful of Sunshine.
Neil who is releasing a new album containing the track on May 6 2008, was also a mentor for the finalists, giving advice to remaining finalists.
Pre-Order the new album now-
Home Before Dark (Deluxe Edition)
