Jazz singer Nancy Wilson has died at her California home after battling a long illness. Wilson was best known for the 1964 hit, "(You Don't Know) How Glad I Am." Over the span of her career, she recorded more than 70 albums and won three Grammy awards. Her first album "Like in Love" came out in 1959. She often topped the billboard pop charts in the 1960s. Wilson retired from touring in 2011.