From 1958, here's Ann Cole and her remarkable answer to Muddy Waters, the rueful yet optimistic ode to female self-empowerment "I've Got Nothing Working."
To be honest, I'd never heard of Cole, or heard this record, until I chanced across it while websurfing yesterday morning, but according to my old colleague Bruce Eder over at All-Music Guide, Cole was a big deal in her day (voted Most Promising Female R&b Vocalist of 1956, actually). Not only that, this isn't even technically an answer to Muddy's record; it turns out Cole herself recorded "Got My Mojo Working" the same year as that award, and Muddy learned the song after seeing her perform it onstage.
Had Cole's version been a hit, of course, history might have been changed in unfathomable ways. Of Cole herself, alas, I can find no mention after the '50s.