Lee Dorsey was a proper R&B singer, from the days when R&B actually did what it said on the tin. Apparently he was also in the US Navy and a kick arse boxer. A man of many skills then.
Give It Up
And then we have Dee Edwards, a great singer who released a chain of tracks during the 1960s, but made it big in the charts in the late 1970s when she got into disco. However the tune I'm linking is a more soulful ditty from the early 70s and is a personal fave.
I Can Deal With That