Best two female singing voices....?

[Taunton Blue Genie]

I saw Sister Rosetta Sharp on a blues package tour circa 1963/63. It included Otis Spann, Brownie McGee and Sonny Terry and (what was his name....? Oh. yes...) MUDDY WATERS! Had never seen a woman play an electric guitar before that day. Shattered a few delusions, I can tell you.

Reckon that trumps your occasional viewings of Trower at the Bridgewater Bridge and Social Club, ole fruit...

I have never seen Monsieur Trower in Bridgwater (not Bridgewater), you name-dropper

I saw Johnny Winter in Exeter and Frome though...