I imagine that my phonology is identical to that of Ella when she sings. I say imagine, because I could be making a mistake (or several mistakes) about what I actually say, how I actually pronounce certain sounds. When I hear Ella, however, I don't hear anything that strikes me as different from my own dialect--except for the vowel in immoral which I say as immoeral and she sings as immah-ral.

Sarah Vaughan, on the other hand, sings "Prelyude to a Kiss." I know that I say "prelude" and not "prelyude," just as I say "nuespaper" and not "nyewspaper."