Thelma Houston is an American singer-songwriter and actress. She scored a number-one hit in 1977 with her cover version of the song "Don't Leave Me This Way", which won the 1978 Grammy Award for Best Female R&B Vocal Performance. Wikipedia*
On the C-SPAN Networks:
Thelma Houston has one video in the C-SPAN Video Library; the first appearance was a 2009 Forum.