Who Coined the phrase "It Ain't Over Till The Fat Lady Sings?"

When I hear this quote it makes me think I heard before that it is related to opera. Can’t find information on it.

According to these folks, it was a San Antonio sportscaster who first said it.

Oh, and note that the correct quote is, indeed, “The opera ain’t over until the fat lady sings.”

Cecil agrees.

That site is wrong. I remember my grandparents using that phrase back in the mid 1960’s.

Agree-I ** know ** I heard it in the 60s,before Dandy Don used his “Turn out the lights” on MNF.

Though I don’t know what month the book was published, the expression “Church ain’t over till the fat lady sings.” was documented in Southern Words and sayings [1976] by Fabia Rue Smith and Charles Rayford.

Given that the lead time associated with compiling and publishing such books, this suggests the expression pre-dates Dan Cooks column. It’s a wonderful phrase, but I’m not sure it’d instantly qualify for last second inclusion. We Southerners invent too many colorful turns of phrases each day, for one isolated quip in a Texas column to stand out much. Of course, it might simply have tickled someone’s fancy.

Oops, I meant to add: it is equally likely that the sportscaster or someone he knew read the book, and he unknowingly repeated it.

Rosanne Barr?