Kevin Sharp, known for his 1996 hit "Nobody Knows" as well as granting wishes to critically ill children, died Saturday from "ongoing complications" from stomach operations and digestive problems, according to his website. He was 43.

Kevin began his career while being treated for bone cancer when he met producer David Foster through the Make-A-Wish Foundation and never forget about that gift. He spent much of his time visiting sick children and speaking to cancer patients. He became a spokesman for the Make-A-Wish Foundation and was named their Wish Granter of the Year in 1997.