"(You Don't Know) How Glad I Am" is a song written by Jimmy Williams and Larry Harrison.
[1] In the US, its best-known recorded version is that by Nancy Wilson, a hit single for her, in the summer of 1964.
Wilson, who had been recording since 1960, was afforded her first pop Top 40 hit with ..."How Glad I Am": The single went to No.
[3] In April 1965 "(You Don't Know) How Glad I Am" received the Grammy Award for Best Rhythm & Blues Recording: Wilson was surprised by the categorization of "...How Glad I Am" as R&B as she would have classifieded it as a pop record,[4] and the track had not been a major R&B hit peaking at No.
[5] Wilson would have one additional Top 40 hit after the success of "(You Don't Know) How Glad I Am": In 1968, "Face It Girl, It's Over", reached its peak position of 29.