Sisters Dionne Warwick, Dee Dee Warwick and Cissy Huston all started out as The Drinkard Sisters later becoming The Drinkard Singers – singing in church and doing the gospel thing, as so many soul singers did.
The fusion of Blues and folk songs with religious gospel music resulted in R ‘ n B. Probably with a little jazz for good measure!
Four US postage stamps featured female gospel singers:
Roberta Martin, Sister Rosetta Tharpe, Clara Ward, and Mahalia Jackson, all known for their stirring renditions of songs that touched the heart and soul of listeners across the nation.
Wikipedia: The Drinkard Singers